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East Prussia was a
province A province is an administrative division within a country or sovereign state, state. The term derives from the ancient Roman , which was the major territorial and administrative unit of the Roman Empire, Roman Empire's territorial possessions ou ...
of the
Kingdom of Prussia The Kingdom of Prussia (, ) was a German state that existed from 1701 to 1918.Marriott, J. A. R., and Charles Grant Robertson. ''The Evolution of Prussia, the Making of an Empire''. Rev. ed. Oxford: Clarendon Press, 1946. It played a signif ...
from 1772 to 1829 and again from 1878 (with the Kingdom itself being part of the
German Empire The German Empire (),; ; World Book, Inc. ''The World Book dictionary, Volume 1''. World Book, Inc., 2003. p. 572. States that Deutsches Reich translates as "German Realm" and was a former official name of Germany. also referred to as Imperia ...
from 1871); following World War I it formed part of the
Weimar Republic The Weimar Republic, officially known as the German Reich, was the German Reich, German state from 1918 to 1933, during which it was a constitutional republic for the first time in history; hence it is also referred to, and unofficially proclai ...
's
Free State of Prussia The Free State of Prussia (, ) was one of the States of the Weimar Republic, constituent states of Weimar Republic, Germany from 1918 to 1947. The successor to the Kingdom of Prussia after the defeat of the German Empire in World War I, it cont ...
, until 1945. Its capital city was
Königsberg Königsberg (; ; ; ; ; ; , ) is the historic Germany, German and Prussian name of the city now called Kaliningrad, Russia. The city was founded in 1255 on the site of the small Old Prussians, Old Prussian settlement ''Twangste'' by the Teuton ...
(present-day
Kaliningrad Kaliningrad,. known as Königsberg; ; . until 1946, is the largest city and administrative centre of Kaliningrad Oblast, an Enclave and exclave, exclave of Russia between Lithuania and Poland ( west of the bulk of Russia), located on the Prego ...
). East Prussia was the main part of the region of Prussia along the southeastern Baltic Coast. The bulk of the ancestral lands of the Baltic
Old Prussians Old Prussians, Baltic Prussians or simply Prussians were a Balts, Baltic people that inhabited the Prussia (region), region of Prussia, on the southeastern shore of the Baltic Sea between the Vistula Lagoon to the west and the Curonian Lagoon ...
were enclosed within East Prussia. During the 13th century, the native Prussians were conquered by the crusading
Teutonic Knights The Teutonic Order is a Catholic religious institution founded as a military society in Acre, Kingdom of Jerusalem. The Order of Brothers of the German House of Saint Mary in Jerusalem was formed to aid Christians on their pilgrimages to t ...
. After the
conquest Conquest involves the annexation or control of another entity's territory through war or Coercion (international relations), coercion. Historically, conquests occurred frequently in the international system, and there were limited normative or ...
the indigenous Balts were gradually converted to Christianity. Because of
Germanization Germanisation, or Germanization, is the spread of the German language, German people, people, and German culture, culture. It was a central idea of German conservative thought in the 19th and the 20th centuries, when conservatism and ethnic nati ...
and colonisation over the following centuries,
Germans Germans (, ) are the natives or inhabitants of Germany, or sometimes more broadly any people who are of German descent or native speakers of the German language. The Basic Law for the Federal Republic of Germany, constitution of Germany, imple ...
became the dominant ethnic group, while
Poles Pole or poles may refer to: People *Poles (people), another term for Polish people, from the country of Poland * Pole (surname), including a list of people with the name * Pole (musician) (Stefan Betke, born 1967), German electronic music artist ...
and
Lithuanians Lithuanians () are a Balts, Baltic ethnic group. They are native to Lithuania, where they number around 2,378,118 people. Another two million make up the Lithuanian diaspora, largely found in countries such as the Lithuanian Americans, United Sta ...
formed sizeable minorities. From the 13th century, the region of Prussia was part of the
monastic state of the Teutonic Knights The State of the Teutonic Order () was a theocratic state located along the southeastern shore of the Baltic Sea in northern Europe. It was formed by the knights of the Teutonic Order during the early 13th century Northern Crusades in the region ...
. After the Second Peace of Thorn in 1466 it became a part of the
Kingdom of Poland The Kingdom of Poland (; Latin: ''Regnum Poloniae'') was a monarchy in Central Europe during the Middle Ages, medieval period from 1025 until 1385. Background The West Slavs, West Slavic tribe of Polans (western), Polans who lived in what i ...
, either directly (
Warmia Warmia ( ; Latin: ''Varmia'', ''Warmia''; ; Warmian subdialect, Warmian: ''Warńija''; Old Prussian language, Old Prussian: ''Wārmi'') is both a historical and an ethnographic region in northern Poland, forming part of historical Prussia (reg ...
) or as a fief (remainder). In 1525, with the
Prussian Homage The Prussian Homage or Prussian Tribute (; ) was the formal investiture of Albert, Duke of Prussia ( 1490-1568), with his Duchy of Prussia as a fief of the Kingdom of Poland that took place on 10 April 1525 in the then capital of Kraków, Kin ...
, the territory became the
Duchy of Prussia The Duchy of Prussia (, , ) or Ducal Prussia (; ) was a duchy in the region of Prussia established as a result of secularization of the Monastic Prussia, the territory that remained under the control of the State of the Teutonic Order until t ...
, a vassal duchy of Poland. The
Old Prussian language Old Prussian is an extinct West Baltic language belonging to the Baltic branch of the Indo-European languages, which was once spoken by the Old Prussians, the Baltic peoples of the Prussian region. The language is called Old Prussian to av ...
had become extinct by the 17th or early 18th century. Because the duchy was outside of the core
Holy Roman Empire The Holy Roman Empire, also known as the Holy Roman Empire of the German Nation after 1512, was a polity in Central and Western Europe, usually headed by the Holy Roman Emperor. It developed in the Early Middle Ages, and lasted for a millennium ...
, the prince-electors of Brandenburg were able to proclaim themselves
King King is a royal title given to a male monarch. A king is an Absolute monarchy, absolute monarch if he holds unrestricted Government, governmental power or exercises full sovereignty over a nation. Conversely, he is a Constitutional monarchy, ...
beginning in 1701. After the annexation of most of western Royal Prussia in the
First Partition of Poland The First Partition of Poland took place in 1772 as the first of three partitions that eventually ended the existence of the Polish–Lithuanian Commonwealth by 1795. The growth of power in the Russian Empire threatened the Kingdom of Prussia an ...
in 1772, eastern (ducal) Prussia was connected by land with the rest of the Prussian state and was reorganized as a province the following year. Between 1829 and 1878, the Province of East Prussia was joined with
West Prussia The Province of West Prussia (; ; ) was a province of Prussia from 1773 to 1829 and from 1878 to 1919. West Prussia was established as a province of the Kingdom of Prussia in 1773, formed from Royal Prussia of the Polish–Lithuanian Commonweal ...
to form the Province of Prussia. The Polish and Lithuanian populations were subjected to Germanisation policies, and later to outright persecution. The
Kingdom of Prussia The Kingdom of Prussia (, ) was a German state that existed from 1701 to 1918.Marriott, J. A. R., and Charles Grant Robertson. ''The Evolution of Prussia, the Making of an Empire''. Rev. ed. Oxford: Clarendon Press, 1946. It played a signif ...
became the leading state of the
German Empire The German Empire (),; ; World Book, Inc. ''The World Book dictionary, Volume 1''. World Book, Inc., 2003. p. 572. States that Deutsches Reich translates as "German Realm" and was a former official name of Germany. also referred to as Imperia ...
after its creation in 1871. However, the
Treaty of Versailles The Treaty of Versailles was a peace treaty signed on 28 June 1919. As the most important treaty of World War I, it ended the state of war between Germany and most of the Allies of World War I, Allied Powers. It was signed in the Palace ...
following
World War I World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...
granted West Prussia to Poland and made East Prussia an exclave of
Weimar Germany The Weimar Republic, officially known as the German Reich, was the German Reich, German state from 1918 to 1933, during which it was a constitutional republic for the first time in history; hence it is also referred to, and unofficially proclai ...
(the so-called Polish Corridor separated East Prussia from the rest of Germany), while the
Memel Territory Memel, a name derived from the Couronian-Latvian ''memelis, mimelis, mēms'' for "mute, silent", may refer to: *Memel, East Prussia, Germany, now , Lithuania **, (Klaipėda Castle Klaipėda Castle (), also known as Memelburg or Memel Castle, is ...
, part of the
Lithuania Minor Lithuania Minor (; ; ) or Prussian Lithuania (; ; ) is one of five ethnographic regions of Lithuania. It is a historical region of Prussia, where Prussian Lithuanians (or Lietuvininkai) lived, now located in Lithuania and the Kaliningrad Obla ...
region, was detached and annexed by Lithuania in 1923. Following
Nazi Germany Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalit ...
's defeat in World War II in 1945, war-torn East Prussia was divided at
Joseph Stalin Joseph Vissarionovich Stalin (born Dzhugashvili; 5 March 1953) was a Soviet politician and revolutionary who led the Soviet Union from 1924 until Death and state funeral of Joseph Stalin, his death in 1953. He held power as General Secret ...
's insistence between the
Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
(the
Kaliningrad Oblast Kaliningrad Oblast () is the westernmost federal subjects of Russia, federal subject of the Russian Federation. It is a Enclave and exclave, semi-exclave on the Baltic Sea within the Baltic region of Prussia (region), Prussia, surrounded by Pola ...
became part of the
Russian SFSR The Russian Soviet Federative Socialist Republic (Russian SFSR or RSFSR), previously known as the Russian Socialist Federative Soviet Republic and the Russian Soviet Republic, and unofficially as Soviet Russia,Declaration of Rights of the labo ...
, and the constituent counties of the
Klaipėda Region The Klaipėda Region () or Memel Territory ( or ''Memelgebiet'') was defined by the 1919 Treaty of Versailles in 1920 and refers to the northernmost part of the German province of East Prussia, when, as Memelland, it was put under the administr ...
in the
Lithuanian SSR The Lithuanian Soviet Socialist Republic (Lithuanian SSR; ; ), also known as Soviet Lithuania or simply Lithuania, was '' de facto'' one of the constituent republics of the Soviet Union between 1940–1941 and 1944–1990. After 1946, its terr ...
) and the
People's Republic of Poland The Polish People's Republic (1952–1989), formerly the Republic of Poland (1947–1952), and also often simply known as Poland, was a country in Central Europe that existed as the predecessor of the modern-day democratic Republic of Poland. ...
(the Warmian-Masurian Voivodeship). The capital city Königsberg was renamed
Kaliningrad Kaliningrad,. known as Königsberg; ; . until 1946, is the largest city and administrative centre of Kaliningrad Oblast, an Enclave and exclave, exclave of Russia between Lithuania and Poland ( west of the bulk of Russia), located on the Prego ...
in 1946. The German and the Masurian population of the province was largely evacuated during the war or expelled shortly afterwards in the
expulsion of Germans after World War II Expulsion or expelled may refer to: General * Deportation * Ejection (sports) * Eviction * Exile * Expeller pressing * Expulsion (education) * Expulsion from the United States Congress * Extradition * Forced migration * Ostracism * Pers ...
. An estimated 300,000 died either in wartime bombing raids, in the battles to defend the province, through mistreatment by the Red Army, or from hunger, cold and disease.Andreas Kossert, ''Ostpreußen. Geschichte und Mythos'', 2007 Pantheon Verlag, PDF edition, p. 342. According to Kossert East Prussia lost about 511,000 out of 2,490,000 inhabitants, thereof 311,000 civilians.


Geography

The landscape of East Prussia consisted of gently rolling plains and small hills, with flatter terrain in the north and more hills in the south. The province had a
humid continental climate A humid continental climate is a climatic region defined by Russo-German climatologist Wladimir Köppen in 1900, typified by four distinct seasons and large seasonal temperature differences, with warm to hot (and often humid) summers, and cold ...
which was most pronounced in
Lithuania Minor Lithuania Minor (; ; ) or Prussian Lithuania (; ; ) is one of five ethnographic regions of Lithuania. It is a historical region of Prussia, where Prussian Lithuanians (or Lietuvininkai) lived, now located in Lithuania and the Kaliningrad Obla ...
and at higher elevations in the south in the region of
Masuria Masuria ( ; ; ) is an ethnographic and geographic region in northern and northeastern Poland, known for its 2,000 lakes. Masuria occupies much of the Masurian Lake District. Administratively, it is part of the Warmian–Masurian Voivodeship (ad ...
, while the northwesternmost coastal parts approached an
oceanic climate An oceanic climate, also known as a marine climate or maritime climate, is the temperate climate sub-type in Köppen climate classification, Köppen classification represented as ''Cfb'', typical of west coasts in higher middle latitudes of co ...
. In the northwest, the province bordered the
Baltic Sea The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by the countries of Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden, and the North European Plain, North and Central European Plain regions. It is the ...
, with the
Vistula Spit The Vistula Spit (; ; ; ) is an aeolian sand spit, or peninsular stretch of land, separating Vistula Lagoon from Gdańsk Bay, in the Baltic Sea, with its tip separated from the mainland by the Strait of Baltiysk. The border between Poland (Pom ...
and Curonian Spit separating the sea itself from the
Vistula Lagoon The Vistula Lagoon is a brackish water lagoon on the Baltic Sea roughly 56 miles (90 km) long, 6 to 15 miles (10 to 19 km) wide, and up to 17 feet (5 m) deep, separated from the Gdańsk Bay by the Vistula Spit. Geography The lag ...
and
Curonian Lagoon The Curonian Lagoon (or Bay, Gulf; Prussian: ''Kursjanmari'', , ) is a freshwater lagoon separated from the Baltic Sea by the Curonian Spit. Its surface area is . The Neman River () supplies about 90% of its inflows; its watershed consists of ...
, respectively. The
Sambia Peninsula Sambia () or Samland () or Kaliningrad Peninsula (official name, , ''Kaliningradsky poluostrov'') is a peninsula in the Kaliningrad Oblast of Russia, on the southeastern shore of the Baltic Sea. The peninsula is bounded by the Curonian Lagoon to ...
() juts into the Baltic Sea between these two lagoons. Most of the rivers of East Prussia emptied into the two lagoons; the
Pregolya The Pregolya or Pregola (; ; ; ) is a river in the Russian Kaliningrad Oblast exclave. Name A possible ancient name by Ptolemy of the Pregolya River is Chronos (from Germanic *''hrauna'', "stony"), although other theories identify Chronos as a ...
(), Pasłęka (), and Prokhladnaya () into the Vistula Lagoon, and the
Neman Neman, Nemunas or Niemen is a river in Europe that rises in central Belarus and flows through Lithuania then forms Lithuania–Russia border, the northern border of Kaliningrad Oblast, Russia's western exclave, which specifically follows its s ...
() and Minija () into the Curonian Lagoon. In the northeast of the province, the river
Šešupė The Šešupė (); ; ; ) is a 298 km long riverŠešupė
''VLE''
that flows through Poland (27 km), Lithuania (158 ...
(), a left-tributary of the Neman, formed the border with the
Russian Empire The Russian Empire was an empire that spanned most of northern Eurasia from its establishment in November 1721 until the proclamation of the Russian Republic in September 1917. At its height in the late 19th century, it covered about , roughl ...
, and today forms the border between
Kaliningrad Oblast Kaliningrad Oblast () is the westernmost federal subjects of Russia, federal subject of the Russian Federation. It is a Enclave and exclave, semi-exclave on the Baltic Sea within the Baltic region of Prussia (region), Prussia, surrounded by Pola ...
and Lithuania. The
Klaipėda Region The Klaipėda Region () or Memel Territory ( or ''Memelgebiet'') was defined by the 1919 Treaty of Versailles in 1920 and refers to the northernmost part of the German province of East Prussia, when, as Memelland, it was put under the administr ...
() was a portion of the province to the north of the Neman river. Adjacent to the Curonian Lagoon and the lower reaches of the Neman river could be found the , a vast partially-drained
bog A bog or bogland is a wetland that accumulates peat as a deposit of dead plant materials often mosses, typically sphagnum moss. It is one of the four main types of wetlands. Other names for bogs include mire, mosses, quagmire, and musk ...
, much of it below sea-level. Further south, the region becomes more hilly, with fewer bogs and more lakes. To the east, near the modern Polish-Russian border, was the Romincka Forest (), a famous hunting-ground for Prussian nobility. On the eastern end of the forest is
Lake Vištytis A lake is often a naturally occurring, relatively large and fixed body of water on or near the Earth's surface. It is localized in a basin or interconnected basins surrounded by dry land. Lakes lie completely on land and are separate from t ...
(), and to the south are the (). The Angrapa river (), a tributary of the Pregel, flows out Lake Mamry () on the northern end of the
Masurian Lake District The Masurian Lake District or Masurian Lake Land () is a lake district in northeastern Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpath ...
. The largest lake in the province was
Śniardwy Śniardwy () is a lake in the Masurian Lake District of the Warmian-Masurian Voivodeship, Poland. At , Śniardwy is the largest lake in Poland. It was also the largest lake in Prussia and in Germany, when Warmia-Masuria was under German rule and ...
(), at 113.8 square kilometers in area. The headwaters of the Pregel's numerous tributaries were found in southern East Prussia, with the longest, the Łyna (), extending almost to the southern border with
Congress Poland Congress Poland or Congress Kingdom of Poland, formally known as the Kingdom of Poland, was a polity created in 1815 by the Congress of Vienna as a semi-autonomous Polish state, a successor to Napoleon's Duchy of Warsaw. It was established w ...
, winding its course northward through southern
Warmia Warmia ( ; Latin: ''Varmia'', ''Warmia''; ; Warmian subdialect, Warmian: ''Warńija''; Old Prussian language, Old Prussian: ''Wārmi'') is both a historical and an ethnographic region in northern Poland, forming part of historical Prussia (reg ...
and the central portion of the province. In the southernmost regions, the rivers flow to the south, emptying into the
Narew The Narew (; ; or ) is a 499-kilometre (310 mi) river primarily in north-eastern Poland. It is a tributary of the river Vistula. The Narew is one of Europe's few braided rivers, the term relating to the twisted channels resembling braided h ...
and
Vistula The Vistula (; ) is the longest river in Poland and the ninth-longest in Europe, at in length. Its drainage basin, extending into three other countries apart from Poland, covers , of which is in Poland. The Vistula rises at Barania Góra i ...
rivers. The highest elevation of East Prussia at 312 meters above sea level was Dylewska Góra (), found in the southwest near the border with West Prussia.


Background

At the instigation of Duke
Konrad I of Masovia Konrad I of Masovia (ca. 1187/88 – 31 August 1247), from the Polish Piast dynasty, was the sixth Duke of Masovia and Kuyavia from 1194 until his death as well as High Duke of Poland from 1229 to 1232 and again from 1241 to 1243. Life Konrad w ...
, the
Teutonic Knights The Teutonic Order is a Catholic religious institution founded as a military society in Acre, Kingdom of Jerusalem. The Order of Brothers of the German House of Saint Mary in Jerusalem was formed to aid Christians on their pilgrimages to t ...
took possession of
Prussia Prussia (; ; Old Prussian: ''Prūsija'') was a Germans, German state centred on the North European Plain that originated from the 1525 secularization of the Prussia (region), Prussian part of the State of the Teutonic Order. For centuries, ...
in the 13th century and created a monastic state to administer the conquered
Old Prussians Old Prussians, Baltic Prussians or simply Prussians were a Balts, Baltic people that inhabited the Prussia (region), region of Prussia, on the southeastern shore of the Baltic Sea between the Vistula Lagoon to the west and the Curonian Lagoon ...
. Local Old-Prussian (north) and Polish (south) toponyms were gradually Germanised. The Knights' expansionist policies, including occupation of Polish Pomerania with Gdańsk/Danzig and western Lithuania, brought them into conflict with the
Kingdom of Poland The Kingdom of Poland (; Latin: ''Regnum Poloniae'') was a monarchy in Central Europe during the Middle Ages, medieval period from 1025 until 1385. Background The West Slavs, West Slavic tribe of Polans (western), Polans who lived in what i ...
and embroiled them in several wars, culminating in the Polish-Lithuanian-Teutonic War, whereby the united armies of Poland and
Lithuania Lithuania, officially the Republic of Lithuania, is a country in the Baltic region of Europe. It is one of three Baltic states and lies on the eastern shore of the Baltic Sea, bordered by Latvia to the north, Belarus to the east and south, P ...
, defeated the Teutonic Order at the
Battle of Grunwald The Battle of Grunwald was fought on 15 July 1410 during the Polish–Lithuanian–Teutonic War. The alliance of the Crown of the Kingdom of Poland and the Grand Duchy of Lithuania, led respectively by King Władysław II Jagiełło (Jogaila), a ...
in 1410. In 1440 the anti-Teutonic Prussian Confederation was founded, and various cities and nobles of the region joined it. In 1454 upon the Confederation's request King
Casimir IV of Poland Casimir IV (Casimir Andrew Jagiellon; ; Lithuanian: ; 30 November 1427 – 7 June 1492) was Grand Duke of Lithuania from 1440 and King of Poland from 1447 until his death in 1492. He was one of the most active Polish-Lithuanian rulers; under ...
signed the act of incorporation of the entire region to Poland. The Teutonic Knights' defeat was formalised in the
Second Peace of Toruń The Peace of Thorn or Toruń of 1466, also known as the Second Peace of Thorn or Toruń (; ), was a peace treaty signed in the Hanseatic city of Thorn (Toruń) on 19 October 1466 between the Polish king Casimir IV Jagiellon and the Teutonic ...
in 1466 ending the Thirteen Years' War. The restoration of Pomerania/
Pomerelia Pomerelia, also known as Eastern Pomerania, Vistula Pomerania, and also before World War II as Polish Pomerania, is a historical sub-region of Pomerania on the southern shore of the Baltic Sea in northern Poland. Gdańsk Pomerania is largely c ...
to Poland was confirmed, and
Warmia Warmia ( ; Latin: ''Varmia'', ''Warmia''; ; Warmian subdialect, Warmian: ''Warńija''; Old Prussian language, Old Prussian: ''Wārmi'') is both a historical and an ethnographic region in northern Poland, forming part of historical Prussia (reg ...
also was confirmed part of Poland, with both co-forming the larger Polish provinces of Royal Prussia and
Greater Poland Greater Poland, often known by its Polish name Wielkopolska (; ), is a Polish Polish historical regions, historical region of west-central Poland. Its chief and largest city is Poznań followed by Kalisz, the oldest city in Poland. The bound ...
. The remainder of historic Prussia also became a part of "one and indivisible" Kingdom of Poland as a
fief A fief (; ) was a central element in medieval contracts based on feudal law. It consisted of a form of property holding or other rights granted by an overlord to a vassal, who held it in fealty or "in fee" in return for a form of feudal alle ...
and
protectorate A protectorate, in the context of international relations, is a State (polity), state that is under protection by another state for defence against aggression and other violations of law. It is a dependent territory that enjoys autonomy over ...
held by the Teutonic Knights. 1466 and 1525 arrangements by kings of Poland were not verified by the
Holy Roman Empire The Holy Roman Empire, also known as the Holy Roman Empire of the German Nation after 1512, was a polity in Central and Western Europe, usually headed by the Holy Roman Emperor. It developed in the Early Middle Ages, and lasted for a millennium ...
, as well as the previous gains of the
Teutonic Knights The Teutonic Order is a Catholic religious institution founded as a military society in Acre, Kingdom of Jerusalem. The Order of Brothers of the German House of Saint Mary in Jerusalem was formed to aid Christians on their pilgrimages to t ...
, were not verified. The Teutonic Order lost eastern Prussia when Grand Master Albert of Brandenburg-Ansbach converted to
Lutheranism Lutheranism is a major branch of Protestantism that emerged under the work of Martin Luther, the 16th-century German friar and Protestant Reformers, reformer whose efforts to reform the theology and practices of the Catholic Church launched ...
and secularized the Prussian branch of the Teutonic Order in 1525. Albert established himself as the first duke of the
Duchy of Prussia The Duchy of Prussia (, , ) or Ducal Prussia (; ) was a duchy in the region of Prussia established as a result of secularization of the Monastic Prussia, the territory that remained under the control of the State of the Teutonic Order until t ...
and a
vassal A vassal or liege subject is a person regarded as having a mutual obligation to a lord or monarch, in the context of the feudal system in medieval Europe. While the subordinate party is called a vassal, the dominant party is called a suzerain ...
of the Polish crown by the
Prussian Homage The Prussian Homage or Prussian Tribute (; ) was the formal investiture of Albert, Duke of Prussia ( 1490-1568), with his Duchy of Prussia as a fief of the Kingdom of Poland that took place on 10 April 1525 in the then capital of Kraków, Kin ...
. Walter von Cronberg, the next Grand Master, was enfeoffed with the title to Prussia after the
Diet of Augsburg The diets of Augsburg were the meetings of the Imperial Diet of the Holy Roman Empire held in the German city of Augsburg. Both an Imperial City and the residence of the Augsburg prince-bishops, the town had hosted the Estates in many such se ...
in 1530, but the Order never regained possession of the territory. In 1569 the
Hohenzollern The House of Hohenzollern (, ; , ; ) is a formerly royal (and from 1871 to 1918, imperial) German dynasty whose members were variously princes, electors, kings and emperors of Hohenzollern, Brandenburg, Prussia, the German Empire, and Romania. ...
prince-elector The prince-electors ( pl. , , ) were the members of the Electoral College of the Holy Roman Empire, which elected the Holy Roman Emperor. Usually, half of the electors were archbishops. From the 13th century onwards, a small group of prince- ...
s of the
Margraviate of Brandenburg The Margraviate of Brandenburg () was a major principality of the Holy Roman Empire from 1157 to 1806 that, having electoral status although being quite poor, grew rapidly in importance after inheriting the Duchy of Prussia in 1618 and then came ...
became co-regents with Albert's son, the feeble-minded Albert Frederick. The Administrator of Prussia, the grandmaster of the Teutonic Order Maximilian III, son of emperor Maximilian II died in 1618. When Maximilian died, Albert's line died out, and the Duchy of Prussia passed to the Electors of Brandenburg, forming Brandenburg-Prussia. Taking advantage of the Swedish invasion of Poland in 1655, and instead of fulfilling his vassal's duties towards the Polish Kingdom, by joining forces with the Swedes and subsequent treaties of Wehlau, Labiau, and
Oliva Oliva (, ; ) is a Municipalities of Spain, municipality in the Comarques of the Valencian Community, ''comarca'' of Safor in the Valencia (autonomous community), Valencian Community, Spain. To its east lie of coastline and beaches fronting t ...
, Elector and Duke Frederick William succeeded in revoking the king of Poland's sovereignty over the Duchy of Prussia in 1660. There was strong opposition to the separation of the region from Poland, especially in
Königsberg Königsberg (; ; ; ; ; ; , ) is the historic Germany, German and Prussian name of the city now called Kaliningrad, Russia. The city was founded in 1255 on the site of the small Old Prussians, Old Prussian settlement ''Twangste'' by the Teuton ...
(). A confederation was formed in the city to maintain Poland's sovereignty over the city and region. The Brandenburg Elector and his army, however, entered the city and abducted and imprisoned the leader of the city's anti-Elector opposition Hieronymus Roth. In 1663, the city burghers, forced by Elector Frederick William, swore an oath of allegiance to him, however, in the same ceremony they still also pledged allegiance to Poland. The absolutist elector also subdued the noble estates of Prussia. Although Brandenburg was a part of the
Holy Roman Empire The Holy Roman Empire, also known as the Holy Roman Empire of the German Nation after 1512, was a polity in Central and Western Europe, usually headed by the Holy Roman Emperor. It developed in the Early Middle Ages, and lasted for a millennium ...
, the Prussian lands were not within the
Holy Roman Empire The Holy Roman Empire, also known as the Holy Roman Empire of the German Nation after 1512, was a polity in Central and Western Europe, usually headed by the Holy Roman Emperor. It developed in the Early Middle Ages, and lasted for a millennium ...
and were with the administration by the
Teutonic Order The Teutonic Order is a religious order (Catholic), Catholic religious institution founded as a military order (religious society), military society in Acre, Israel, Acre, Kingdom of Jerusalem. The Order of Brothers of the German House of Sa ...
grandmasters under jurisdiction of the Emperor. In return for supporting Emperor Leopold I in the
War of the Spanish Succession The War of the Spanish Succession was a European great power conflict fought between 1701 and 1714. The immediate cause was the death of the childless Charles II of Spain in November 1700, which led to a struggle for control of the Spanish E ...
, Elector Frederick III was allowed to crown himself "
King in Prussia King ''in'' Prussia (German language, German: ''König in Preußen'') was a title used by the Prussian kings (also in personal union Elector of Brandenburg, Electors of Brandenburg) from 1701 to 1772. Subsequently, they used the title King ''of' ...
" in 1701. The new kingdom ruled by the Hohenzollern dynasty became known as the
Kingdom of Prussia The Kingdom of Prussia (, ) was a German state that existed from 1701 to 1918.Marriott, J. A. R., and Charles Grant Robertson. ''The Evolution of Prussia, the Making of an Empire''. Rev. ed. Oxford: Clarendon Press, 1946. It played a signif ...
. The designation "
Kingdom of Prussia The Kingdom of Prussia (, ) was a German state that existed from 1701 to 1918.Marriott, J. A. R., and Charles Grant Robertson. ''The Evolution of Prussia, the Making of an Empire''. Rev. ed. Oxford: Clarendon Press, 1946. It played a signif ...
" was gradually applied to the various lands of Brandenburg-Prussia. To differentiate it from the larger entity, the former Duchy of Prussia became known as ''Altpreußen'' ("Old Prussia"), the province of Prussia, or "East Prussia". Approximately one-third of East Prussia's population died in the Great Northern War plague outbreak and
famine A famine is a widespread scarcity of food caused by several possible factors, including, but not limited to war, natural disasters, crop failure, widespread poverty, an Financial crisis, economic catastrophe or government policies. This phenom ...
of 1709–1711, including the last speakers of
Old Prussian Old Prussian is an extinct West Baltic language belonging to the Baltic branch of the Indo-European languages, which was once spoken by the Old Prussians, the Baltic peoples of the Prussian region. The language is called Old Prussian to av ...
. The plague, probably brought by foreign troops during the
Great Northern War In the Great Northern War (1700–1721) a coalition led by the Tsardom of Russia successfully contested the supremacy of the Swedish Empire in Northern Europe, Northern, Central Europe, Central and Eastern Europe. The initial leaders of the ant ...
, killed 250,000 East Prussians, especially in the province's eastern regions. Crown Prince Frederick William I led the rebuilding of East Prussia, founding numerous towns. In 1724, Frederick William I prohibited
Poles Pole or poles may refer to: People *Poles (people), another term for Polish people, from the country of Poland * Pole (surname), including a list of people with the name * Pole (musician) (Stefan Betke, born 1967), German electronic music artist ...
,
Samogitians Samogitians ( Samogitian: ''žemaitē'', , ) are the inhabitants of Samogitia, an ethnographic region of Lithuania. Many speak the Samogitian language, which in Lithuania is mostly considered a dialect of the Lithuanian language together with t ...
and Jews from settling in Lithuania Minor, and initiated German colonization to change the region's ethnic composition. Thousands of Protestants expelled from the
Archbishopric of Salzburg The Prince-Archbishopric of Salzburg (; ) was an ecclesiastical principality and state of the Holy Roman Empire. It comprised the secular territory ruled by the archbishops of Salzburg, as distinguished from the much larger Catholic diocese f ...
were allowed to settle in depleted East Prussia. In 1756
Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
decided to go to war with the Kingdom of Prussia and annex the territory, which was then to be offered to Poland as part of a territorial exchange desired by Russia, however, ultimately Russia only occupied the region for four years during the
Seven Years' War The Seven Years' War, 1756 to 1763, was a Great Power conflict fought primarily in Europe, with significant subsidiary campaigns in North America and South Asia. The protagonists were Kingdom of Great Britain, Great Britain and Kingdom of Prus ...
before withdrawing in 1762 and did not make Poland an offer of territorial exchange.


History as a province

In the 1772
First Partition of Poland The First Partition of Poland took place in 1772 as the first of three partitions that eventually ended the existence of the Polish–Lithuanian Commonwealth by 1795. The growth of power in the Russian Empire threatened the Kingdom of Prussia an ...
, the Prussian king
Frederick the Great Frederick II (; 24 January 171217 August 1786) was the monarch of Prussia from 1740 until his death in 1786. He was the last Hohenzollern monarch titled ''King in Prussia'', declaring himself ''King of Prussia'' after annexing Royal Prussia ...
annexed neighboring Royal Prussia, i.e., the Polish voivodeships of
Pomerania Pomerania ( ; ; ; ) is a historical region on the southern shore of the Baltic Sea in Central Europe, split between Poland and Germany. The central and eastern part belongs to the West Pomeranian Voivodeship, West Pomeranian, Pomeranian Voivod ...
(
Gdańsk Pomerania Gdańsk Pomerania (; ; ) is the main geographical region within Pomerelia (also known as Vistula Pomerania, Eastern Pomerania, and previously Polish Pomerania) in northern Poland, covering the bulk of Pomeranian Voivodeship. In contrast to ''Pome ...
or
Pomerelia Pomerelia, also known as Eastern Pomerania, Vistula Pomerania, and also before World War II as Polish Pomerania, is a historical sub-region of Pomerania on the southern shore of the Baltic Sea in northern Poland. Gdańsk Pomerania is largely c ...
),
Malbork Malbork (German: ''Marienburg'') is a town in the Pomeranian Voivodeship, Poland. It is the seat of Malbork County and has a population of 36,709 people as of 2024. The town is located on the Nogat river, in the historical region of Pomerelia. Fo ...
,
Chełmno Chełmno (; older ; , formerly also ) is a town in northern Poland near the Vistula river with 18,915 inhabitants as of December 2021. It is the seat of the Chełmno County in the Kuyavian-Pomeranian Voivodeship. Due to its regional importance ...
and the
Prince-Bishopric of Warmia The Prince-Bishopric of Warmia (; ) was a semi-independent ecclesiastical state, ruled by the incumbent ordinary of the Warmia see and comprising one third of the then diocesan area. The Warmia see was a Prussian diocese under the jurisdictio ...
, thereby connecting his Prussian and Farther Pomeranian lands and cutting the rest of Poland from the
Baltic Baltic may refer to: Peoples and languages *Baltic languages, a subfamily of Indo-European languages, including Lithuanian, Latvian and extinct Old Prussian *Balts (or Baltic peoples), ethnic groups speaking the Baltic languages and/or originatin ...
coast. The territory of
Warmia Warmia ( ; Latin: ''Varmia'', ''Warmia''; ; Warmian subdialect, Warmian: ''Warńija''; Old Prussian language, Old Prussian: ''Wārmi'') is both a historical and an ethnographic region in northern Poland, forming part of historical Prussia (reg ...
was incorporated into the lands of former Ducal Prussia, which, by administrative deed of 31 January 1772 were named ''East Prussia''. The former Polish Pomerelian lands beyond the
Vistula The Vistula (; ) is the longest river in Poland and the ninth-longest in Europe, at in length. Its drainage basin, extending into three other countries apart from Poland, covers , of which is in Poland. The Vistula rises at Barania Góra i ...
River together with Malbork and
Chełmno Land Chełmno land (, or Kulmerland) is a part of the historical region of Pomerelia, located in central-northern Poland. Chełmno land is named after the city of Chełmno. The largest city in the region is Toruń; another bigger city is Grudziąd ...
formed the Province of
West Prussia The Province of West Prussia (; ; ) was a province of Prussia from 1773 to 1829 and from 1878 to 1919. West Prussia was established as a province of the Kingdom of Prussia in 1773, formed from Royal Prussia of the Polish–Lithuanian Commonweal ...
with its capital at Marienwerder (Kwidzyn) in 1773. The Polish Partition Sejm ratified the cession on 30 September 1772, whereafter Frederick officially went on to call himself a King "of" Prussia. The former Ducal Prussian
districts A district is a type of administrative division that in some countries is managed by the local government. Across the world, areas known as "districts" vary greatly in size, spanning regions or counties, several municipalities, subdivisions ...
of Eylau (Iława), Marienwerder, Riesenburg (Prabuty) and Schönberg (Szymbark) passed to West Prussia. Until the Prussian reforms of 1808, the administration in East Prussia was transferred to the General War and Finance Directorate in
Berlin Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population withi ...
, represented by two local chamber departments: * German chamber department at Königsberg with the districts of: **
Brandenburg Brandenburg, officially the State of Brandenburg, is a States of Germany, state in northeastern Germany. Brandenburg borders Poland and the states of Berlin, Mecklenburg-Vorpommern, Lower Saxony, Saxony-Anhalt, and Saxony. It is the List of Ger ...
** Neidenburg ** Rastenburg ** Samland ** Tapiau **
Braunsberg Braniewo () (, , Old Prussian: ''Brus''), is a town in northern Poland, in Warmia, in the Warmian-Masurian Voivodeship, with a population of 16,907 as of June 2021. It is the capital of Braniewo County. Braniewo is the second biggest city of ...
(Ermland) ** Heilsberg (Ermland) ** Mohrungen (Ermland) * Lithuanian chamber department at
Gumbinnen Gusev (; ; ; ) is a town and the administrative center of Gusevsky District of Kaliningrad Oblast, Russia, located at the confluence of the Pissa and Krasnaya Rivers, near the border with Poland and Lithuania, east of Chernyakhovsk. It is p ...
(Gusev) with the districts of: **
Gumbinnen Gusev (; ; ; ) is a town and the administrative center of Gusevsky District of Kaliningrad Oblast, Russia, located at the confluence of the Pissa and Krasnaya Rivers, near the border with Poland and Lithuania, east of Chernyakhovsk. It is p ...
**
Insterburg Chernyakhovsk (; German language, German: Insterburg) is a types of inhabited localities in Russia, town in Kaliningrad Oblast, Russia, and the administrative center of Chernyakhovsky District. Located at the confluence of the Instruch and Angrap ...
** Memel **
Olecko Olecko (former since 1560, colloquially also , since 1928) is a town in northeastern Poland. It is in Masuria, near Ełk and Suwałki, in the Warmian-Masurian Voivodeship. It is at the mouth of the Lega (river), Lega river which flows into the G ...
** Ragnit ** Seehesten ( Sensburg) ** Tilsit On 31 January 1773, King Frederick II announced that the newly annexed lands were to be known as the Province of
West Prussia The Province of West Prussia (; ; ) was a province of Prussia from 1773 to 1829 and from 1878 to 1919. West Prussia was established as a province of the Kingdom of Prussia in 1773, formed from Royal Prussia of the Polish–Lithuanian Commonweal ...
, while the former
Duchy of Prussia The Duchy of Prussia (, , ) or Ducal Prussia (; ) was a duchy in the region of Prussia established as a result of secularization of the Monastic Prussia, the territory that remained under the control of the State of the Teutonic Order until t ...
and the
Prince-Bishopric of Warmia The Prince-Bishopric of Warmia (; ) was a semi-independent ecclesiastical state, ruled by the incumbent ordinary of the Warmia see and comprising one third of the then diocesan area. The Warmia see was a Prussian diocese under the jurisdictio ...
became the
Province of East Prussia East Prussia was a province of the Kingdom of Prussia from 1772 to 1829 and again from 1878 (with the Kingdom itself being part of the German Empire from 1871); following World War I it formed part of the Weimar Republic's Free State of Prussia, ...
.


Napoleonic Wars

After the disastrous defeat of the Royal Prussian Army at the Battle of Jena-Auerstedt in 1806,
Napoleon Napoleon Bonaparte (born Napoleone di Buonaparte; 15 August 1769 – 5 May 1821), later known by his regnal name Napoleon I, was a French general and statesman who rose to prominence during the French Revolution and led Military career ...
occupied Berlin and had the officials of the Prussian General Directorate swear an
oath of allegiance An oath of allegiance is an oath whereby a subject or citizen acknowledges a duty of allegiance and swears loyalty to a monarch or a country. In modern republics, oaths are sworn to the country in general, or to the country's constitution. For ...
to him, while King Frederick William III and his consort Louise fled via Königsberg and the Curonian Spit to Memel. The French
Grande Armée The (; ) was the primary field army of the French Imperial Army (1804–1815), French Imperial Army during the Napoleonic Wars. Commanded by Napoleon, from 1804 to 1808 it won a series of military victories that allowed the First French Empi ...
troops immediately took up pursuit but were delayed in the
Battle of Eylau The Battle of Eylau (also known as the Battle of Preussisch-Eylau) was a bloody and strategically inconclusive battle on 7 and 8 February 1807 between Napoleon's and the Imperial Russian Army under the command of General Levin August von Be ...
on 9 February 1807 by an East Prussian contingent under General Anton Wilhelm von L'Estocq. Napoleon had to stay at the Finckenstein Palace, but in May, after a siege of 75 days, his troops led by Marshal
François Joseph Lefebvre François Joseph Lefebvre, Duke of Danzig ( , ; 25 October 1755 – 14 September 1820) was a French military commander of the French Revolutionary Wars and the Napoleonic Wars, and one of the original eighteen Marshals of the Empire created by N ...
were able to capture the city of Danzig, which had been tenaciously defended by General Count Friedrich Adolf von Kalkreuth. On 14 June, Napoleon ended the
War of the Fourth Coalition The War of the Fourth Coalition () was a war spanning 1806–1807 that saw a multinational coalition fight against Napoleon's First French Empire, French Empire, subsequently being defeated. The main coalition partners were Kingdom of Prussia, ...
with his victory at the
Battle of Friedland The Battle of Friedland (14 June 1807) was a major engagement of the Napoleonic Wars between the armies of the French Empire commanded by Napoleon I and the armies of the Russian Empire led by General Levin August von Bennigsen. Napoleon and t ...
. Frederick William and Queen Louise met with Napoleon for peace negotiations, and on 9 July the Prussian king signed the Treaty of Tilsit. The succeeding Prussian reforms instigated by Heinrich Friedrich Karl vom und zum Stein and Karl August von Hardenberg included the implementation of an appellation court at Königsberg, a
municipal corporation Municipal corporation is the legal term for a local governing body, including (but not necessarily limited to) cities, counties, towns, townships, charter townships, villages, and boroughs. The term can also be used to describe municipally o ...
, economic freedom as well as
emancipation Emancipation generally means to free a person from a previous restraint or legal disability. More broadly, it is also used for efforts to procure Economic, social and cultural rights, economic and social rights, civil and political rights, po ...
of the
serfs Serfdom was the status of many peasants under feudalism, specifically relating to manorialism and similar systems. It was a condition of debt bondage and indentured servitude with similarities to and differences from slavery. It developed dur ...
and
Jews Jews (, , ), or the Jewish people, are an ethnoreligious group and nation, originating from the Israelites of History of ancient Israel and Judah, ancient Israel and Judah. They also traditionally adhere to Judaism. Jewish ethnicity, rel ...
. In the course of the Prussian restoration by the 1815
Congress of Vienna The Congress of Vienna of 1814–1815 was a series of international diplomatic meetings to discuss and agree upon a possible new layout of the European political and constitutional order after the downfall of the French Emperor Napoleon, Napol ...
, the East Prussian territories were re-arranged in the of
Gumbinnen Gusev (; ; ; ) is a town and the administrative center of Gusevsky District of Kaliningrad Oblast, Russia, located at the confluence of the Pissa and Krasnaya Rivers, near the border with Poland and Lithuania, east of Chernyakhovsk. It is p ...
and
Königsberg Königsberg (; ; ; ; ; ; , ) is the historic Germany, German and Prussian name of the city now called Kaliningrad, Russia. The city was founded in 1255 on the site of the small Old Prussians, Old Prussian settlement ''Twangste'' by the Teuton ...
. From 1905, the southern districts of East Prussia formed the separate ''Regierungsbezirk'' of Allenstein. East and West Prussia were first united in
personal union A personal union is a combination of two or more monarchical states that have the same monarch while their boundaries, laws, and interests remain distinct. A real union, by contrast, involves the constituent states being to some extent in ...
in 1824 and then merged in a
real union Real union is a union of two or more states, which share some state institutions in contrast to personal unions; however, they are not as unified as states in a political union. It is a development from personal union and has historically been ...
in 1829 to form the Province of Prussia. The united province was again split into separate East and West Prussian provinces in 1878.


German Empire

From 1824 to 1878, East Prussia was combined with West Prussia to form the Province of Prussia, after which they were reestablished as separate provinces. Along with the rest of the Kingdom of Prussia, East Prussia became part of the
German Empire The German Empire (),; ; World Book, Inc. ''The World Book dictionary, Volume 1''. World Book, Inc., 2003. p. 572. States that Deutsches Reich translates as "German Realm" and was a former official name of Germany. also referred to as Imperia ...
during the
unification of Germany The unification of Germany (, ) was a process of building the first nation-state for Germans with federalism, federal features based on the concept of Lesser Germany (one without Habsburgs' multi-ethnic Austria or its German-speaking part). I ...
in 1871. From 1885 to 1890
Berlin Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population withi ...
's population grew by 20%,
Brandenburg Brandenburg, officially the State of Brandenburg, is a States of Germany, state in northeastern Germany. Brandenburg borders Poland and the states of Berlin, Mecklenburg-Vorpommern, Lower Saxony, Saxony-Anhalt, and Saxony. It is the List of Ger ...
and the
Rhineland The Rhineland ( ; ; ; ) is a loosely defined area of Western Germany along the Rhine, chiefly Middle Rhine, its middle section. It is the main industrial heartland of Germany because of its many factories, and it has historic ties to the Holy ...
gained 8.5%,
Westphalia Westphalia (; ; ) is a region of northwestern Germany and one of the three historic parts of the state of North Rhine-Westphalia. It has an area of and 7.9 million inhabitants. The territory of the region is almost identical with the h ...
10%, while East Prussia lost 0.07% and West Prussia 0.86%. This stagnancy in population despite a high birth surplus in eastern Germany was because many people from the East Prussian countryside moved westward to seek work in the expanding industrial centres of the
Ruhr Area The Ruhr ( ; , also ''Ruhrpott'' ), also referred to as the Ruhr Area, sometimes Ruhr District, Ruhr Region, or Ruhr Valley, is a polycentric urban area in North Rhine-Westphalia, Germany. With a population density of 1,160/km2 and a populati ...
and Berlin (see ''
Ostflucht The ''Ostflucht'' (; "flight from the East") was the migration of Germans, in the later 19th century and early 20th century, from areas which were then eastern parts of Germany to more industrialized regions in central and western Germany. The ...
''). The population of the province in 1900 was 1,996,626 people, with a religious makeup of 1,698,465
Protestants Protestantism is a branch of Christianity that emphasizes Justification (theology), justification of sinners Sola fide, through faith alone, the teaching that Salvation in Christianity, salvation comes by unmerited Grace in Christianity, divin ...
, 269,196
Roman Catholics The Catholic Church (), also known as the Roman Catholic Church, is the largest Christian church, with 1.27 to 1.41 billion baptized Catholics worldwide as of 2025. It is among the world's oldest and largest international institut ...
, and 13,877 Jews. The Low Prussian dialect predominated in East Prussia, although High Prussian was spoken in
Warmia Warmia ( ; Latin: ''Varmia'', ''Warmia''; ; Warmian subdialect, Warmian: ''Warńija''; Old Prussian language, Old Prussian: ''Wārmi'') is both a historical and an ethnographic region in northern Poland, forming part of historical Prussia (reg ...
. The numbers of
Masurians The Masurians or Mazurs (; ; Masurian dialects, Masurian: ''Mazurÿ''), historically also known as Prussian Masurians (Polish language, Polish: ''Mazurzy pruscy''), are an ethnic group originating from the region of Masuria, within the Warmian- ...
,
Kursenieki The Kursenieki (, – 'Curonians', , ) are a nearly extinct Baltic ethnic group living along the Curonian Spit. "Kuršiai" refers only to inhabitants of Lithuania and former East Prussia that speak a southwestern dialect of Latvian. Some auto ...
and
Prussian Lithuanians The Prussian Lithuanians, or Lietuvininkai (singular: ''Lietuvininkas'', plural: ''Lietuvininkai''), are Lithuanians, originally Lithuanian language speakers, who formerly inhabited a territory in northeastern East Prussia called Prussian Lithuan ...
decreased over time due to the process of
Germanization Germanisation, or Germanization, is the spread of the German language, German people, people, and German culture, culture. It was a central idea of German conservative thought in the 19th and the 20th centuries, when conservatism and ethnic nati ...
. The Polish-speaking population concentrated in the south of the province (
Masuria Masuria ( ; ; ) is an ethnographic and geographic region in northern and northeastern Poland, known for its 2,000 lakes. Masuria occupies much of the Masurian Lake District. Administratively, it is part of the Warmian–Masurian Voivodeship (ad ...
and Warmia) and all German geographic atlases at the start of 20th century showed the southern part of East Prussia as Polish with the number of Polish-speakers estimated at the time to be 300,000.
Kursenieki The Kursenieki (, – 'Curonians', , ) are a nearly extinct Baltic ethnic group living along the Curonian Spit. "Kuršiai" refers only to inhabitants of Lithuania and former East Prussia that speak a southwestern dialect of Latvian. Some auto ...
inhabited the areas around the Curonian lagoon, while Lithuanian-speaking Prussians concentrated in the northeast in (
Lithuania Minor Lithuania Minor (; ; ) or Prussian Lithuania (; ; ) is one of five ethnographic regions of Lithuania. It is a historical region of Prussia, where Prussian Lithuanians (or Lietuvininkai) lived, now located in Lithuania and the Kaliningrad Obla ...
). The Old Prussian ethnic group became completely Germanized over time and the
Old Prussian language Old Prussian is an extinct West Baltic language belonging to the Baltic branch of the Indo-European languages, which was once spoken by the Old Prussians, the Baltic peoples of the Prussian region. The language is called Old Prussian to av ...
died out in the 18th century.


World War I

At the German entry into World War I, East Prussia became a theatre of war when the
Russian Empire The Russian Empire was an empire that spanned most of northern Eurasia from its establishment in November 1721 until the proclamation of the Russian Republic in September 1917. At its height in the late 19th century, it covered about , roughl ...
invaded the country. The
Imperial Russian Army The Imperial Russian Army () was the army of the Russian Empire, active from 1721 until the Russian Revolution of 1917. It was organized into a standing army and a state militia. The standing army consisted of Regular army, regular troops and ...
encountered at first little resistance because the bulk of the
Imperial German Army The Imperial German Army (1871–1919), officially referred to as the German Army (), was the unified ground and air force of the German Empire. It was established in 1871 with the political unification of Germany under the leadership of Kingdom o ...
had been directed towards the Western Front according to the
Schlieffen Plan The Schlieffen Plan (, ) is a name given after the First World War to German war plans, due to the influence of Field Marshal Alfred von Schlieffen and his thinking on an invasion of France and Belgium, which began on 4 August 1914. Schlieffe ...
. Despite early success and the capture of the towns of Rastenburg and
Gumbinnen Gusev (; ; ; ) is a town and the administrative center of Gusevsky District of Kaliningrad Oblast, Russia, located at the confluence of the Pissa and Krasnaya Rivers, near the border with Poland and Lithuania, east of Chernyakhovsk. It is p ...
, in the Battle of Tannenberg in 1914 and the Second Battle of the Masurian Lakes in 1915, the Russians were decisively defeated and forced to retreat. The Russians were followed by the German Army advancing into Russian territory. After the Russian army's first invasion the majority of the civilian population fled westwards, while several thousand remaining civilians were deported to Russia. Treatment of civilians by both armies was mostly disciplined, although 74 civilians were killed by Russian troops in the Abschwangen massacre. The region had to be rebuilt because of damage caused by the war.


Division after 1918


Weimar Republic

With the forced abdication of Emperor
Wilhelm II Wilhelm II (Friedrich Wilhelm Viktor Albert; 27 January 18594 June 1941) was the last German Emperor and King of Prussia from 1888 until Abdication of Wilhelm II, his abdication in 1918, which marked the end of the German Empire as well as th ...
in the
German Revolution of 1918–1919 German(s) may refer to: * Germany, the country of the Germans and German things **Germania (Roman era) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizenship in Germany, see also Ge ...
, Germany became a
republic A republic, based on the Latin phrase ''res publica'' ('public affair' or 'people's affair'), is a State (polity), state in which Power (social and political), political power rests with the public (people), typically through their Representat ...
. Most of the former Prussian provinces of West Prussia and Posen, territories annexed by Prussia in the 18th century
Partitions of Poland The Partitions of Poland were three partition (politics), partitions of the Polish–Lithuanian Commonwealth that took place between 1772 and 1795, toward the end of the 18th century. They ended the existence of the state, resulting in the eli ...
, were ceded to the
Second Polish Republic The Second Polish Republic, at the time officially known as the Republic of Poland, was a country in Central and Eastern Europe that existed between 7 October 1918 and 6 October 1939. The state was established in the final stage of World War I ...
according to the
Treaty of Versailles The Treaty of Versailles was a peace treaty signed on 28 June 1919. As the most important treaty of World War I, it ended the state of war between Germany and most of the Allies of World War I, Allied Powers. It was signed in the Palace ...
. East Prussia became an
exclave An enclave is a territory that is entirely surrounded by the territory of only one other state or entity. An enclave can be an independent territory or part of a larger one. Enclaves may also exist within territorial waters. ''Enclave'' is s ...
, being separated from mainland Germany. The
Klaipėda Region The Klaipėda Region () or Memel Territory ( or ''Memelgebiet'') was defined by the 1919 Treaty of Versailles in 1920 and refers to the northernmost part of the German province of East Prussia, when, as Memelland, it was put under the administr ...
was also separated from the province. Because most of West Prussia became part of the
Second Polish Republic The Second Polish Republic, at the time officially known as the Republic of Poland, was a country in Central and Eastern Europe that existed between 7 October 1918 and 6 October 1939. The state was established in the final stage of World War I ...
as the Polish Corridor, the formerly West Prussian Marienwerder region became part of East Prussia as the administrative district (''Regierungsbezirk'') of West Prussia. Also, the
Działdowo Działdowo (; , ) is a town in northern Poland with 20,935 inhabitants as of December 2021, the capital of Działdowo County. As part of Masuria, it is situated in the Warmian-Masurian Voivodeship (since 1999), Działdowo belonged previously to Cie ...
district in the Allenstein region became part of the Second Polish Republic. The Seedienst Ostpreußen (Sea Service East Prussia) was established to provide an independent transport service to East Prussia. On 11 July 1920, amidst the backdrop of the Polish-Soviet War in which the
Second Polish Republic The Second Polish Republic, at the time officially known as the Republic of Poland, was a country in Central and Eastern Europe that existed between 7 October 1918 and 6 October 1939. The state was established in the final stage of World War I ...
appeared to be on the brink of defeat, the
East Prussian plebiscite The East Prussian plebiscite (), also known as the Allenstein and Marienwerder plebiscite or Warmia, Masuria and Powiśle plebiscite (), was a plebiscite for the self-determination of the regions of southern Warmia (Ermland), Masuria (Mazury, Ma ...
in eastern West Prussia and southern East Prussia was held under Allied supervision to determine if the areas should join Poland or remain in the
Weimar Germany The Weimar Republic, officially known as the German Reich, was the German Reich, German state from 1918 to 1933, during which it was a constitutional republic for the first time in history; hence it is also referred to, and unofficially proclai ...
Province of East Prussia. 96.7% of the people voted to remain within Germany (97.89% in the East Prussian plebiscite district). The Klaipėda Territory (Memelland), a
League of Nations mandate A League of Nations mandate represented a legal status under international law for specific territories following World War I, involving the transfer of control from one nation to another. These mandates served as legal documents establishing th ...
since 1920, was occupied by the
Lithuanian Armed Forces The Lithuanian Armed Forces () are the military of Lithuania. The Lithuanian Armed Forces consist of the Lithuanian Land Forces, the Lithuanian Navy, the Lithuanian Air Force and the Lithuanian Special Operations Force. In wartime, the Li ...
in 1923 and annexed without giving the inhabitants a choice by ballot.


Nazi Germany

After
Adolf Hitler's rise to power The rise to power of Adolf Hitler, dictator of Nazi Germany from 1933 to 1945, began in the newly established Weimar Republic in September 1919, when Hitler joined the ''German Workers' Party, Deutsche Arbeiterpartei'' (DAP; German Workers' Par ...
, opposition politicians were persecuted and newspapers banned. Erich Koch, who headed the East Prussian Nazi party from 1928, led the district from 1932. The Otto-Braun-House was requisitioned to become the headquarters of the SA, which used the house to imprison and torture its opponents. Walter Schütz, a communist member of the Reichstag, was murdered here. This period was characterized by efforts to collectivize the local agriculture and ruthlessness in dealing with Koch's critics inside and outside the
Nazi Party The Nazi Party, officially the National Socialist German Workers' Party ( or NSDAP), was a far-right politics, far-right political party in Germany active between 1920 and 1945 that created and supported the ideology of Nazism. Its precursor ...
.Robert S. Wistrich, ''Who's who in Nazi Germany'', 2002, pp. 142–143. He also had long-term plans for mass-scale industrialization of the largely agricultural province. These actions made him unpopular among the local peasants. In 1932 the local paramilitary SA had already started to terrorise their political opponents. On the night of 31 July 1932 there was a bomb attack on the headquarters of the
Social Democrats Social democracy is a social, economic, and political philosophy within socialism that supports political and economic democracy and a gradualist, reformist, and democratic approach toward achieving social equality. In modern practice, s ...
in Königsberg, the Otto-Braun-House. The Communist politician Gustav Sauf was killed; the executive editor of the Social Democratic newspaper ''"Königsberger Volkszeitung"'', Otto Wyrgatsch; and the German People's Party politician
Max von Bahrfeldt Max Ferdinand Bahrfeldt (), ennobled as von Bahrfeldt in 1913 (6 February 1856 – 11 April 1936), was a royal Prussian General of the Infantry (Germany), General of the Infantry, a local historian, and a numismatist of world renown. In the anglo ...
were all severely injured. Members of the Reichsbanner were assaulted while the local Reichsbanner Chairman of Lötzen, Kurt Kotzan, was murdered on 6 August 1932. In the
March 1933 German federal election March is the third month of the year in both the Julian and Gregorian calendars. Its length is 31 days. In the Northern Hemisphere, the meteorological beginning of spring occurs on the first day of March. The March equinox on the 20 or 21 ...
, the last contested pre-war German election, the local population of East Prussia voted overwhelmingly for
Adolf Hitler Adolf Hitler (20 April 1889 – 30 April 1945) was an Austrian-born German politician who was the dictator of Nazi Germany from 1933 until Death of Adolf Hitler, his suicide in 1945. Adolf Hitler's rise to power, He rose to power as the lea ...
's
Nazi Party The Nazi Party, officially the National Socialist German Workers' Party ( or NSDAP), was a far-right politics, far-right political party in Germany active between 1920 and 1945 that created and supported the ideology of Nazism. Its precursor ...
. Through publicly funded emergency relief programs concentrating on agricultural land-improvement projects and road construction, the "Erich Koch Plan" for East Prussia allegedly made the province free of unemployment: on 16 August 1933 Koch reported to
Hitler Adolf Hitler (20 April 1889 – 30 April 1945) was an Austrian-born German politician who was the dictator of Nazi Germany from 1933 until Death of Adolf Hitler, his suicide in 1945. Adolf Hitler's rise to power, He rose to power as the lea ...
that unemployment had been banished entirely from the province, a feat that gained admiration throughout the
Reich ( ; ) is a German word whose meaning is analogous to the English word " realm". The terms and are respectively used in German in reference to empires and kingdoms. In English usage, the term " Reich" often refers to Nazi Germany, also ca ...
. In actuality, the Erich Koch Plan had been a staged propaganda event organized by Walther Funk and the Reich Ministry of Public Enlightenment and Propaganda to promote the Nazi Party's work creation policies, with East Prussia chosen because it already had relatively low unemployment due to its agrarian economy. Koch's industrialization plans provoked conflict with
Richard Walther Darré Richard Walther Darré (born Ricardo Walther Óscar Darré; 14 July 1895 – 5 September 1953) was one of the leading Nazism, Nazi "Blood and Soil, blood and soil" () ideologists and served as Reich Ministry of Food and Agriculture, Reich ...
, who held the office of the Reich Peasant Leader (''Reichsbauernführer'') and Minister of Agriculture. Darré, a neopaganist rural romantic, wanted to enforce his vision of an agricultural East Prussia. When his "Land" representatives challenged Koch's plans, Koch arrested them. Richard Steigmann-Gall, ''The Holy Reich – Nazi Conceptions of Christianity 1919–1945'', 2004, p. 102. In 1938 the
Nazis Nazism (), formally named National Socialism (NS; , ), is the far-right politics, far-right Totalitarianism, totalitarian socio-political ideology and practices associated with Adolf Hitler and the Nazi Party (NSDAP) in Germany. During H ...
changed about one-third of the toponyms of the area, eliminating, Germanizing, or simplifying a number of
Old Prussian Old Prussian is an extinct West Baltic language belonging to the Baltic branch of the Indo-European languages, which was once spoken by the Old Prussians, the Baltic peoples of the Prussian region. The language is called Old Prussian to av ...
, as well as those Polish or Lithuanian names originating from
colonists A settler or a colonist is a person who establishes or joins a permanent presence that is separate to existing communities. The entity that a settler establishes is a settlement. A settler is called a pioneer if they are among the first settli ...
and
refugees A refugee, according to the United Nations High Commissioner for Refugees (UNHCR), is a person "forced to flee their own country and seek safety in another country. They are unable to return to their own country because of feared persecution as ...
to Prussia during and after the
Protestant Reformation The Reformation, also known as the Protestant Reformation or the European Reformation, was a time of major theological movement in Western Christianity in 16th-century Europe that posed a religious and political challenge to the papacy and ...
. More than 1,500 places were ordered to be renamed by 16 July 1938 following a decree issued by
Gauleiter A ''Gauleiter'' () was a regional leader of the Nazi Party (NSDAP) who served as the head of a ''Administrative divisions of Nazi Germany, Gau'' or ''Reichsgau''. ''Gauleiter'' was the third-highest Ranks and insignia of the Nazi Party, rank in ...
and Oberpräsident Erich Koch and initiated by
Adolf Hitler Adolf Hitler (20 April 1889 – 30 April 1945) was an Austrian-born German politician who was the dictator of Nazi Germany from 1933 until Death of Adolf Hitler, his suicide in 1945. Adolf Hitler's rise to power, He rose to power as the lea ...
. Many who would not cooperate with the rulers of
Nazi Germany Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalit ...
were sent to
concentration camps A concentration camp is a prison or other facility used for the internment of political prisoners or politically targeted demographics, such as members of national or ethnic minority groups, on the grounds of national security, or for exploit ...
and held prisoner there until their death or liberation. After the
1939 German ultimatum to Lithuania On 20 March 1939, Nazi Germany's foreign minister Joachim von Ribbentrop presented an oral ultimatum to Juozas Urbšys, foreign minister of Lithuania. Germany demanded that Lithuania give up the Klaipėda Region (also known as the Memel Territo ...
, the
Klaipėda region The Klaipėda Region () or Memel Territory ( or ''Memelgebiet'') was defined by the 1919 Treaty of Versailles in 1920 and refers to the northernmost part of the German province of East Prussia, when, as Memelland, it was put under the administr ...
was integrated again into East Prussia.


World War II

After the 1939
invasion of Poland The invasion of Poland, also known as the September Campaign, Polish Campaign, and Polish Defensive War of 1939 (1 September – 6 October 1939), was a joint attack on the Second Polish Republic, Republic of Poland by Nazi Germany, the Slovak R ...
by Nazi Germany opening World War II, the borders of East Prussia were revised. Regierungsbezirk Westpreußen became part of
Reichsgau Danzig-West Prussia Reichsgau Danzig-West Prussia () was an Reichsgau, administrative division of Nazi Germany created on 8 October 1939 from annexed territory of the Free City of Danzig, the Greater Pomeranian Voivodship (Polish Corridor), and the Marienwerder (regi ...
, while Regierungsbezirk Zichenau ( Ciechanów) was added to East Prussia. Originally part of the Zichenau region, the Sudauen (
Suwałki Suwałki (; ; or סוּוואַלק) is a city in northeastern Poland with a population of 69,206 (2021). It is the capital of Suwałki County and one of the most important centers of commerce in the Podlaskie Voivodeship. A relatively young ci ...
) district in Sudovia was later transferred to the Gumbinnen region. In 1939 East Prussia had 2.49 million inhabitants, 85% of them ethnic Germans, the others
Poles Pole or poles may refer to: People *Poles (people), another term for Polish people, from the country of Poland * Pole (surname), including a list of people with the name * Pole (musician) (Stefan Betke, born 1967), German electronic music artist ...
in the south who, according to Polish estimates numbered in the interwar period around 300,000–350,000, the Latvian speaking
Kursenieki The Kursenieki (, – 'Curonians', , ) are a nearly extinct Baltic ethnic group living along the Curonian Spit. "Kuršiai" refers only to inhabitants of Lithuania and former East Prussia that speak a southwestern dialect of Latvian. Some auto ...
, and
Lietuvininkai The Prussian Lithuanians, or Lietuvininkai (singular: ''Lietuvininkas'', plural: ''Lietuvininkai''), are Lithuanians, originally Lithuanian language speakers, who formerly inhabited a territory in northeastern East Prussia called Prussian Lithuan ...
who spoke Lithuanian in the northeast. Most German East Prussians, Masurians, Kursieniki, and Lietuvininkai were Lutheran, while the population of
Warmia Warmia ( ; Latin: ''Varmia'', ''Warmia''; ; Warmian subdialect, Warmian: ''Warńija''; Old Prussian language, Old Prussian: ''Wārmi'') is both a historical and an ethnographic region in northern Poland, forming part of historical Prussia (reg ...
was mainly Roman Catholic due to the history of its bishopric. The East Prussian Jewish Congregation declined from about 9,000 in 1933 to 3,000 in 1939, as most fled from Nazi rule. During
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
, the Polish ethnic minorities of Catholic Warmians and Lutheran
Masurians The Masurians or Mazurs (; ; Masurian dialects, Masurian: ''Mazurÿ''), historically also known as Prussian Masurians (Polish language, Polish: ''Mazurzy pruscy''), are an ethnic group originating from the region of Masuria, within the Warmian- ...
were persecuted by the
Nazi German Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a totalitarian dictat ...
government, which wanted to erase all aspects of Polish culture and Polish language in
Warmia Warmia ( ; Latin: ''Varmia'', ''Warmia''; ; Warmian subdialect, Warmian: ''Warńija''; Old Prussian language, Old Prussian: ''Wārmi'') is both a historical and an ethnographic region in northern Poland, forming part of historical Prussia (reg ...
and
Masuria Masuria ( ; ; ) is an ethnographic and geographic region in northern and northeastern Poland, known for its 2,000 lakes. Masuria occupies much of the Masurian Lake District. Administratively, it is part of the Warmian–Masurian Voivodeship (ad ...
.S. Achremczyk: ''Warmia'', Olsztyn 2000.S. Achremczyk: ''Historia Warmii i Mazur'', Olsztyn 1997 The Jews who remained in East Prussia in 1942 were shipped to concentration camps, including Theresienstadt in occupied
Czechoslovakia Czechoslovakia ( ; Czech language, Czech and , ''Česko-Slovensko'') was a landlocked country in Central Europe, created in 1918, when it declared its independence from Austria-Hungary. In 1938, after the Munich Agreement, the Sudetenland beca ...
, Kaiserwald in occupied Latvia, and camps in
Minsk Minsk (, ; , ) is the capital and largest city of Belarus, located on the Svislach (Berezina), Svislach and the now subterranean Nyamiha, Niamiha rivers. As the capital, Minsk has a special administrative status in Belarus and is the administra ...
in occupied
Byelorussian Soviet Socialist Republic The Byelorussian Soviet Socialist Republic (BSSR, Byelorussian SSR or Byelorussia; ; ), also known as Soviet Belarus or simply Belarus, was a Republics of the Soviet Union, republic of the Soviet Union (USSR). It existed between 1920 and 19 ...
. Those who remained were later deported and killed in the
Holocaust The Holocaust (), known in Hebrew language, Hebrew as the (), was the genocide of History of the Jews in Europe, European Jews during World War II. From 1941 to 1945, Nazi Germany and Collaboration with Nazi Germany and Fascist Italy ...
. In 1939 the Regierungsbezirk Zichenau was annexed by Germany and incorporated into East Prussia. Parts of it were transferred to other regions, e.g.
Suwałki Region Suwałki Region ( ; ) is a historical region around the city of Suwałki in northeastern Poland near the border with Lithuania. It encompasses the powiats of Augustów, Suwałki, and Sejny, and roughly corresponds to the southern part of the for ...
to Regierungsbezirk Gumbinnen and Soldau (Działdowo) to Regierungsbezirk Allenstein. Despite
Nazi propaganda Propaganda was a tool of the Nazi Party in Germany from its earliest days to the end of the regime in May 1945 at the end of World War II. As the party gained power, the scope and efficacy of its propaganda grew and permeated an increasing amou ...
presenting all of the regions annexed as possessing significant German populations that wanted reunification with Germany, the Reich's statistics of late 1939 show that only 31,000 out of 994,092 people in this territory were ethnic Germans. In the annexed pre-war Polish territory, the Polish population was subjected to various crimes, including mass arrests, roundups, deportations to
forced labour Forced labour, or unfree labour, is any work relation, especially in modern or early modern history, in which people are employed against their will with the threat of destitution, detention, or violence, including death or other forms of ...
and
concentration camps A concentration camp is a prison or other facility used for the internment of political prisoners or politically targeted demographics, such as members of national or ethnic minority groups, on the grounds of national security, or for exploit ...
(including teenagers), executions, massacres (also as part of the ''
Intelligenzaktion The ''Intelligenzaktion'' (), or the Intelligentsia mass shootings, was a series of mass murders committed against the Polish people, Polish intelligentsia (teachers, priests, physicians, and other prominent members of Polish society) during the ...
'' and ''
Aktion T4 (German, ) was a campaign of Homicide#By state actors, mass murder by involuntary euthanasia which targeted Disability, people with disabilities and the mentally ill in Nazi Germany. The term was first used in post-WWII, war trials against d ...
'') and expulsions. The Jews were confined in ghettos and afterwards deported either deported to extermination camps or massacred in the region. Germany operated the Soldau and concentration camps, mostly for Poles, multiple subcamps of the
Stutthof concentration camp Stutthof was a Nazi concentration camp established by Nazi Germany in a secluded, marshy, and wooded area near the village of Stutthof (now Sztutowo) 34 km (21 mi) east of the city of Danzig (Gdańsk) in the territory of the German-an ...
and several prisoner-of-war camps, including Stalag I-A,
Stalag I-B Stalag I-B Hohenstein was a German World War II German prisoner-of-war camps in World War II, prisoner-of-war camp located west of Hohenstein, East Prussia (now Olsztynek, Poland). The camp was partially located on the grounds of the Tannenberg M ...
, Stalag I-C, Stalag I-D, Stalag I-E, Stalag I-F, Stalag Luft VI, Oflag 52, Oflag 53, Oflag 60, Oflag 63 and Oflag 68 with multiple subcamps, for Polish, Belgian, French, British, Serbian, Soviet,
Italian Italian(s) may refer to: * Anything of, from, or related to the people of Italy over the centuries ** Italians, a Romance ethnic group related to or simply a citizen of the Italian Republic or Italian Kingdom ** Italian language, a Romance languag ...
, American, Canadian, Australian, New Zealander, South African, Czech and other Allied POWs in the province. Pre-war Polish citizens made up the majority of forced laborers in the province, with their numbers gradually increasing, but due to the influx of forced laborers of other nationalities, their overall percentage declined from 90% in 1940 to 62% in 1944. Most Polish forced laborers in the province were deported from the pre-war Polish territories annexed into the province by Germany, with German labor offices recruiting forced laborers established in the cities of Ciechanów,
Ostrołęka Ostrołęka (; ) is a small city in northeastern Poland on the Narew river, about northeast of Warsaw, with a population of 51,012 (2021) and an area of . It is the capital of both Ostrołęka County and Ostrołęka City County in the Masovian V ...
,
Płock Płock (pronounced ), officially the Ducal Capital City of Płock, is a city in central Poland, on the Vistula river, in the Masovian Voivodeship. According to the data provided by Central Statistical Office (Poland), GUS on 31 December 2021, the ...
and
Suwałki Suwałki (; ; or סוּוואַלק) is a city in northeastern Poland with a population of 69,206 (2021). It is the capital of Suwałki County and one of the most important centers of commerce in the Podlaskie Voivodeship. A relatively young ci ...
. Hitler's top-secret Eastern front headquarters during the war, the '' Wolf's Lair'', was located in the village of Gierłoż. The Polish resistance was active in the province, both in the annexed pre-war territory of Poland, and in the pre-war territory of East Prussia, with activities in the latter including distribution of
Polish underground press The Polish underground press, devoted to prohibited materials ( sl. , lit. semitransparent blotting paper or, alternatively, , lit. second circulation), has a long history of combatting censorship of oppressive regimes in Poland. It existed th ...
, sabotage actions, executions of Nazis, theft of German weapons, ammunition and equipment, and organization of transports of POWs who escaped German POW camps via the ports of
Gdańsk Gdańsk is a city on the Baltic Sea, Baltic coast of northern Poland, and the capital of the Pomeranian Voivodeship. With a population of 486,492, Data for territorial unit 2261000. it is Poland's sixth-largest city and principal seaport. Gdań ...
and
Gdynia Gdynia is a city in northern Poland and a seaport on the Baltic Sea coast. With an estimated population of 257,000, it is the List of cities in Poland, 12th-largest city in Poland and the second-largest in the Pomeranian Voivodeship after Gdańsk ...
to neutral Sweden. East Prussia was only slightly affected by the war until January 1945, when it was devastated during the East Prussian Offensive. Most of its inhabitants became refugees in bitterly cold weather during the
Evacuation of East Prussia German civilian population and military personnel were evacuated from East Prussia between 20 January and March 1945. The evacuation was initially organized and carried out by Nazi Germany, state authorities but quickly turned into a chaotic fli ...
.


Evacuation of East Prussia

In 1944 the medieval city of
Königsberg Königsberg (; ; ; ; ; ; , ) is the historic Germany, German and Prussian name of the city now called Kaliningrad, Russia. The city was founded in 1255 on the site of the small Old Prussians, Old Prussian settlement ''Twangste'' by the Teuton ...
, which had never been severely damaged by warfare in its 700 years of existence, was almost completely destroyed by two
RAF Bomber Command RAF Bomber Command controlled the Royal Air Force's bomber forces from 1936 to 1968. Along with the United States Army Air Forces, it played the central role in the Strategic bombing during World War II#Europe, strategic bombing of Germany in W ...
raids – the first on the night of 26/27 August 1944, with the second one three nights later, overnight on 29/30 August 1944.
Winston Churchill Sir Winston Leonard Spencer Churchill (30 November 1874 – 24 January 1965) was a British statesman, military officer, and writer who was Prime Minister of the United Kingdom from 1940 to 1945 (Winston Churchill in the Second World War, ...
(''The Second World War'', Book XII) had erroneously believed it to be "a modernized heavily defended fortress" and ordered its destruction.
Gauleiter A ''Gauleiter'' () was a regional leader of the Nazi Party (NSDAP) who served as the head of a ''Administrative divisions of Nazi Germany, Gau'' or ''Reichsgau''. ''Gauleiter'' was the third-highest Ranks and insignia of the Nazi Party, rank in ...
Erich Koch delayed the evacuation of the German civilian population until the Eastern Front approached the East Prussian border in 1944. The population had been systematically misinformed by '' Endsieg'' Nazi propaganda about the real state of military affairs. As a result, many civilians fleeing westward were overtaken by retreating
Wehrmacht The ''Wehrmacht'' (, ) were the unified armed forces of Nazi Germany from 1935 to 1945. It consisted of the German Army (1935–1945), ''Heer'' (army), the ''Kriegsmarine'' (navy) and the ''Luftwaffe'' (air force). The designation "''Wehrmac ...
units and the rapidly advancing
Red Army The Workers' and Peasants' Red Army, often shortened to the Red Army, was the army and air force of the Russian Soviet Republic and, from 1922, the Soviet Union. The army was established in January 1918 by a decree of the Council of People ...
. Reports of Soviet atrocities in the Nemmersdorf massacre of October 1944 and organized rape spread fear and desperation among the civilians. Thousands lost their lives during the sinkings (by Soviet submarine) of the evacuation ships '' Wilhelm Gustloff'', the ''
Goya Francisco José de Goya y Lucientes (; ; 30 March 1746 – 16 April 1828) was a Spanish romantic painter and printmaker. He is considered the most important Spanish artist of the late 18th and early 19th centuries. His paintings, drawings, an ...
'', and the '' General von Steuben''. Königsberg surrendered on 9 April 1945, following the desperate four-day
Battle of Königsberg The Battle of Königsberg, also known as the Königsberg offensive, was one of the last operations of the East Prussian offensive during World War II. In four days of urban warfare, Soviet Union, Soviet forces of the 1st Baltic Front and the 3 ...
. An estimated 300,000 died either in wartime bombing raids, in the battles to defend the province, or through mistreatment by the Red Army or from hunger, cold and disease. However, most of the German inhabitants, which then consisted primarily of women, children and old men, did manage to escape the Red Army as part of the largest exodus of people in human history: "A population which had stood at 2.2 million in 1940 was reduced to 193,000 at the end of May 1945."Beevor, Antony, ''Berlin: The Downfall 1945'', chapters 1–8, Penguin Books (2002).


History after partition and annexation

Following
Nazi Germany Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalit ...
's defeat in
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
in 1945, East Prussia was partitioned between Poland and the
Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
according to the Potsdam Conference, pending a final peace conference with Germany. Since a peace conference never took place, the region was effectively ceded by Germany. Southern East Prussia was placed under Polish administration, while northern East Prussia was divided between the Soviet republics of
Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
(the
Kaliningrad Oblast Kaliningrad Oblast () is the westernmost federal subjects of Russia, federal subject of the Russian Federation. It is a Enclave and exclave, semi-exclave on the Baltic Sea within the Baltic region of Prussia (region), Prussia, surrounded by Pola ...
) and
Lithuania Lithuania, officially the Republic of Lithuania, is a country in the Baltic region of Europe. It is one of three Baltic states and lies on the eastern shore of the Baltic Sea, bordered by Latvia to the north, Belarus to the east and south, P ...
(the constituent counties of the
Klaipėda Region The Klaipėda Region () or Memel Territory ( or ''Memelgebiet'') was defined by the 1919 Treaty of Versailles in 1920 and refers to the northernmost part of the German province of East Prussia, when, as Memelland, it was put under the administr ...
). The city of Königsberg was renamed
Kaliningrad Kaliningrad,. known as Königsberg; ; . until 1946, is the largest city and administrative centre of Kaliningrad Oblast, an Enclave and exclave, exclave of Russia between Lithuania and Poland ( west of the bulk of Russia), located on the Prego ...
in 1946. Most of the German population of the province had left during the evacuation at the end of the war, but several hundreds of thousands died during the years 1944–46 and the remainder were subsequently expelled in accordance with the
Potsdam Agreement The Potsdam Agreement () was the agreement among three of the Allies of World War II: the United Kingdom, the United States, and the Soviet Union after the war ended in Europe that was signed on 1 August 1945 and published the following day. A ...
.


Expulsion of Germans from East Prussia after World War II

Shortly after the end of the war in May 1945, Germans who had fled in early 1945 tried to return to their homes in East Prussia. An estimated number of 800,000 Germans were living in East Prussia during the summer of 1945. Many more were prevented from returning, and the German population of East Prussia was almost completely expelled by the communist regimes. During the war and for some time thereafter 45 camps were established for about 200,000–250,000 forced labourers, the vast majority of whom were deported to the Soviet Union, including the
Gulag The Gulag was a system of Labor camp, forced labor camps in the Soviet Union. The word ''Gulag'' originally referred only to the division of the Chronology of Soviet secret police agencies, Soviet secret police that was in charge of runnin ...
camp system. The largest camp with about 48,000 inmates was established at Deutsch Eylau (Iława). Orphaned children who were left behind in the zone occupied by the Soviet Union were referred to as
Wolf children is a 2012 Japanese animated fantasy drama film directed and co-written by Mamoru Hosoda. The second original feature film directed by Hosoda and the first work written by him, the film stars the voices of Aoi Miyazaki, Takao Osawa, and H ...
. File:Karte viertepolnischeteilung.png, An illustration of the changing borders in Eastern Europe before, during, and after
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
(Map is written in German.) File:German territorial losses 1919 and 1945.svg, Changes in Germany's borders as a result of both
World Wars A world war is an international conflict that involves most or all of the world's major powers. Conventionally, the term is reserved for two major international conflicts that occurred during the first half of the 20th century, World War I (19 ...
, with the partition of East Prussia


Southern East Prussia to Poland

Representatives of the Polish government officially took over the civilian administration of the southern part of East Prussia on 23 May 1945. Subsequently, Polish
expatriate An expatriate (often shortened to expat) is a person who resides outside their native country. The term often refers to a professional, skilled worker, or student from an affluent country. However, it may also refer to retirees, artists and ...
s from Polish lands annexed by the Soviet Union as well as
Ukrainians Ukrainians (, ) are an East Slavs, East Slavic ethnic group native to Ukraine. Their native tongue is Ukrainian language, Ukrainian, and the majority adhere to Eastern Orthodox Church, Eastern Orthodoxy, forming the List of contemporary eth ...
and
Lemkos Lemkos (; ; ; ) are an ethnic group inhabiting the Lemko Region (; ) of Carpathian Rus', an ethnographic region in the Carpathian Mountains and foothills spanning Ukraine, Slovakia, and Poland. Lemkos are often considered to be a sub-group of ...
from southern Poland, expelled in
Operation Vistula Operation Vistula (; ) was the codename for the 1947 forced resettlement of close to 150,000 Ukrainians in Poland, Ukrainians (including Rusyns, Boykos, and Lemkos) from the southeastern provinces of People's Republic of Poland, postwar Poland to ...
, were settled in the area, initially organised as the Masurian District, later replaced by the
Olsztyn Voivodeship Olsztyn Voivodeship () was an administrative division and unit of local government in Poland in the years 1946–75, and a new territorial division between 1975–1998, superseded by Warmian-Masurian Voivodeship. Its capital city was Olszty ...
in 1947, with a few counties incorporated into Białystok Voivodeship and to Gdańsk Voivodeship. The latter counted in 1950 689,000 inhabitants, 22.6% of them coming from areas annexed by the Soviet Union, 10% Ukrainians, and 18.5% of them pre-war inhabitants. It was dissolved in 1975 to form three smaller units: a much smaller homonymous Olsztyn Voivodeship, the bulk of Elbląg Voivodeship and a significant part of the Suwałki Voivodeship. The remaining pre-war population was treated as Germanized Poles and a policy of re-
Polonization Polonization or Polonisation ()In Polish historiography, particularly pre-WWII (e.g., L. Wasilewski. As noted in Смалянчук А. Ф. (Smalyanchuk 2001) Паміж краёвасцю і нацыянальнай ідэяй. Польскі ...
was pursued throughout the country Most of these "
Autochthons There is no generally accepted definition of Indigenous peoples, although in the 21st century the focus has been on self-identification, cultural difference from other groups in a state, a special relationship with their traditional territ ...
" chose to emigrate to West Germany from the 1950s through 1980s (between 1970 and 1988 55,227 persons from Warmia and Masuria moved to Western Germany). Local toponyms were Polonised by the Polish
Commission for the Determination of Place Names The Commission for the Determination of Place Names () was a commission of the Poland, Polish Department of Public Administration, founded in January 1946. Its mission was the establishment of toponyms for places, villages, towns and cities in t ...
, though in most cases it was a restoration of historic Polish names.


Origin of the post-war population

During the Polish post-war census of December 1950, data about the pre-war places of residence of the inhabitants as of August 1939 was collected. In case of children born between September 1939 and December 1950, their origin was reported based on the pre-war places of residence of their mothers. Thanks to this data it is possible to reconstruct the pre-war geographical origin of the post-war population. The same area corresponding to pre-war southern parts of East Prussia (which became Polish in 1945) was inhabited in December 1950 by: Over 80% of the 1950 inhabitants were new in the region, less than 20% had resided in the province already back in 1939 (so called autochthons, who had German citizenship before
World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...
and were granted Polish citizenship after 1945). Over 20% of all inhabitants were Poles expelled from areas of Eastern Poland annexed by the
USSR The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
. The rest were mostly people from neighbouring areas located right next to East Prussia (almost 44% came from
Masovia Mazovia or Masovia ( ) is a historical region in mid-north-eastern Poland. It spans the North European Plain, roughly between Łódź and Białystok, with Warsaw being the largest city and Płock being the capital of the region . Throughout the ...
, Sudovia,
Podlachia Podlachia, also known by its Polish name Podlasie (; ; ), is a historical region in north-eastern Poland. Its largest city is Białystok, whereas the historical capital is Drohiczyn. Similarly to several other historical regions of Poland, e.g ...
and pre-war Polish Pomerania) and southern Poland (≈16%).


Northern part to the Soviet Union

In April 1946, northern East Prussia became an official province of the
Russian Soviet Federative Socialist Republic The Russian Soviet Federative Socialist Republic (Russian SFSR or RSFSR), previously known as the Russian Socialist Federative Soviet Republic and the Russian Soviet Republic, and unofficially as Soviet Russia,Declaration of Rights of the labo ...
as the "''Kyonigsbergskaya Oblast''", with the
Klaipėda Region The Klaipėda Region () or Memel Territory ( or ''Memelgebiet'') was defined by the 1919 Treaty of Versailles in 1920 and refers to the northernmost part of the German province of East Prussia, when, as Memelland, it was put under the administr ...
becoming part of the
Lithuanian Soviet Socialist Republic The Lithuanian Soviet Socialist Republic (Lithuanian SSR; ; ), also known as Soviet Lithuania or simply Lithuania, was ''de facto'' one of the Republics of the Soviet Union, constituent republics of the Soviet Union between 1940–1941 and 1944 ...
. In June 1946 114,070 German and 41,029 Soviet citizens were registered in the Oblast, with an unknown number of disregarded unregistered persons. In July of that year, the historic city of
Königsberg Königsberg (; ; ; ; ; ; , ) is the historic Germany, German and Prussian name of the city now called Kaliningrad, Russia. The city was founded in 1255 on the site of the small Old Prussians, Old Prussian settlement ''Twangste'' by the Teuton ...
was renamed
Kaliningrad Kaliningrad,. known as Königsberg; ; . until 1946, is the largest city and administrative centre of Kaliningrad Oblast, an Enclave and exclave, exclave of Russia between Lithuania and Poland ( west of the bulk of Russia), located on the Prego ...
to honour
Mikhail Kalinin Mikhail Ivanovich Kalinin (, ; 3 June 1946) was a Soviet politician and Russian Old Bolshevik revolutionary who served as the first chairman of the Presidium of the Supreme Soviet (head of state) from 1938 until his resignation in 1946. From ...
and the area named the
Kaliningrad Oblast Kaliningrad Oblast () is the westernmost federal subjects of Russia, federal subject of the Russian Federation. It is a Enclave and exclave, semi-exclave on the Baltic Sea within the Baltic region of Prussia (region), Prussia, surrounded by Pola ...
. Between 24 August and 26 October 1948 21 transports with in total 42,094 Germans left the Oblast to the
Soviet Occupation Zone The Soviet occupation zone in Germany ( or , ; ) was an area of Germany that was occupied by the Soviet Union as a communist area, established as a result of the Potsdam Agreement on 2 August 1945. On 7 October 1949 the German Democratic Republ ...
(which became East Germany). The last remaining Germans left in November 1949 (1,401 persons) and January 1950 (7 persons). The
Prussian Lithuanians The Prussian Lithuanians, or Lietuvininkai (singular: ''Lietuvininkas'', plural: ''Lietuvininkai''), are Lithuanians, originally Lithuanian language speakers, who formerly inhabited a territory in northeastern East Prussia called Prussian Lithuan ...
also experienced the same fate. A similar fate befell the
Curonians :''The Kursenieki are also sometimes known as Curonians.'' The Curonians or Kurs (; ) were a medieval Balts, Baltic tribe living on the shores of the Baltic Sea in the 5th–16th centuries, in what are now western parts of Latvia and Lithuania. ...
who lived in the area around the
Curonian Lagoon The Curonian Lagoon (or Bay, Gulf; Prussian: ''Kursjanmari'', , ) is a freshwater lagoon separated from the Baltic Sea by the Curonian Spit. Its surface area is . The Neman River () supplies about 90% of its inflows; its watershed consists of ...
. While many fled from the
Red Army The Workers' and Peasants' Red Army, often shortened to the Red Army, was the army and air force of the Russian Soviet Republic and, from 1922, the Soviet Union. The army was established in January 1918 by a decree of the Council of People ...
during the evacuation of East Prussia, Curonians that remained behind were subsequently expelled by the
Soviet Union The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
. Only 219 lived along the Curonian Spit in 1955. Many had German names such as Fritz or Hans, a cause for anti-German discrimination. The Soviet authorities considered the Curonians
fascists Fascism ( ) is a far-right, authoritarian, and ultranationalist political ideology and movement. It is characterized by a dictatorial leader, centralized autocracy, militarism, forcible suppression of opposition, belief in a natural social h ...
. Because of this discrimination, many immigrated to West Germany in 1958, where the majority of Curonians now live. After the expulsion of the German population ethnic
Russians Russians ( ) are an East Slavs, East Slavic ethnic group native to Eastern Europe. Their mother tongue is Russian language, Russian, the most spoken Slavic languages, Slavic language. The majority of Russians adhere to Eastern Orthodox Church ...
,
Belarusians Belarusians ( ) are an East Slavs, East Slavic ethnic group native to Belarus. They natively speak Belarusian language, Belarusian, an East Slavic language. More than 9 million people proclaim Belarusian ethnicity worldwide. Nearly 7.99&n ...
, and
Ukrainians Ukrainians (, ) are an East Slavs, East Slavic ethnic group native to Ukraine. Their native tongue is Ukrainian language, Ukrainian, and the majority adhere to Eastern Orthodox Church, Eastern Orthodoxy, forming the List of contemporary eth ...
were settled in the northern part. In the Soviet part of the region, a policy of eliminating all remnants of German history was pursued. All German place names were replaced by new Russian names, with only a few instances of use of historical names, such as Domnovo and Talpaki, based on historical Polish names. The exclave was a military zone, which was closed to foreigners; Soviet citizens could only enter with special permission. In 1967 the remnants of
Königsberg Castle Königsberg Castle (, ) was the seat of the grand masters of the Teutonic Order and of the dukes and kings of Prussia in the city of Königsberg (since 1946 Kaliningrad, Russia). The original fortress on the site was built by the Teutonic Knights ...
were demolished on the orders of
Leonid Brezhnev Leonid Ilyich Brezhnev (19 December 190610 November 1982) was a Soviet politician who served as the General Secretary of the Communist Party of the Soviet Union from 1964 until Death and state funeral of Leonid Brezhnev, his death in 1982 as w ...
to make way for a new " House of the Soviets".


Modern status

Although the 1945–1949 expulsion of Germans from the northern part of former East Prussia was often conducted in a violent and aggressive way by Soviet officials, the present Russian inhabitants of the Kaliningrad Oblast have much less animosity towards Germans. German names have been revived in commercial Russian trade and there is sometimes talk of reverting Kaliningrad's name to its historical name of Königsberg. The city centre of Kaliningrad was completely rebuilt, as
Royal Air Force The Royal Air Force (RAF) is the Air force, air and space force of the United Kingdom, British Overseas Territories and Crown Dependencies. It was formed towards the end of the World War I, First World War on 1 April 1918, on the merger of t ...
bombs in 1944 and the Soviet siege in 1945 had left it in ruins. Since the
dissolution of the Soviet Union The Soviet Union was formally dissolved as a sovereign state and subject of international law on 26 December 1991 by Declaration No. 142-N of the Soviet of the Republics of the Supreme Soviet of the Soviet Union. Declaration No. 142-Н of ...
in 1991, some German groups have tried to help settle the
Volga Germans The Volga Germans (, ; ) are ethnic Germans who settled and historically lived along the Volga River in the region of southeastern European Russia around Saratov and close to Ukraine nearer to the south. Recruited as immigrants to Russia in the ...
from eastern parts of
European Russia European Russia is the western and most populated part of the Russia, Russian Federation. It is geographically situated in Europe, as opposed to the country's sparsely populated and vastly larger eastern part, Siberia, which is situated in Asia ...
in the
Kaliningrad Oblast Kaliningrad Oblast () is the westernmost federal subjects of Russia, federal subject of the Russian Federation. It is a Enclave and exclave, semi-exclave on the Baltic Sea within the Baltic region of Prussia (region), Prussia, surrounded by Pola ...
. This effort was only a minor success, however, as most impoverished Volga Germans preferred to emigrate to the richer Federal Republic of Germany, where they could become German citizens through the
right of return The right of return is a principle in international law which guarantees everyone's right of return to, or re-entry to, their country of citizenship. The right of return is part of the broader human rights concept of freedom of movement and is al ...
. The Polish part of the region, divided in 1975 to form three units: the Olsztyn Voivodeship, the Elbląg Voivodeship, and the Suwałki Voivodeship, has been reestablished as a single entity in 1999 under the name of Warmian-Masurian Voivodeship, whose borders correspond closely to those of southern East Prussia. Since 2004, Poland and Lithuania have become European Union member states, and both the Polish part of the region as well as the Lithuanian
Klaipėda Region The Klaipėda Region () or Memel Territory ( or ''Memelgebiet'') was defined by the 1919 Treaty of Versailles in 1920 and refers to the northernmost part of the German province of East Prussia, when, as Memelland, it was put under the administr ...
, has thereafter become freely accessible by Germans, in line with the free movement of people policy.


Demographics


Historical ethnic and religious structure

In year 1824, shortly before its
merger Mergers and acquisitions (M&A) are business transactions in which the ownership of a company, business organization, or one of their operating units is transferred to or consolidated with another entity. They may happen through direct absorpt ...
with
West Prussia The Province of West Prussia (; ; ) was a province of Prussia from 1773 to 1829 and from 1878 to 1919. West Prussia was established as a province of the Kingdom of Prussia in 1773, formed from Royal Prussia of the Polish–Lithuanian Commonweal ...
, the population of East Prussia was 1,080,000 people. Of that number, according to Karl Andree, ethnic Germans were slightly more than half, while 280,000 (≈26%) were ethnically Polish and 200,000 (≈19%) were ethnically Lithuanian. As of year 1819, there were also 20,000 strong ethnic Curonian and Latvian minorities as well as 2,400 Jews, according to Georg Hassel. Similar numbers are given by
August von Haxthausen August Franz Ludwig Maria, Baron von Haxthausen-Abbenburg (February 3, 1792, in Bökendorf, Prince-Bishopric of Paderborn – December 31, 1866, in Hanover) was a German agricultural scientist, economist, lawyer, writer, and collector of folk ...
in his 1839 book, with a breakdown by county. However, the majority of East Prussian Polish and Lithuanian inhabitants were
Lutherans Lutheranism is a major branch of Protestantism that emerged under the work of Martin Luther, the 16th-century German friar and reformer whose efforts to reform the theology and practices of the Catholic Church launched the Reformation in 15 ...
, not
Roman Catholics The Catholic Church (), also known as the Roman Catholic Church, is the largest Christian church, with 1.27 to 1.41 billion baptized Catholics worldwide as of 2025. It is among the world's oldest and largest international institut ...
like their ethnic kinsmen across the border in the
Russian Empire The Russian Empire was an empire that spanned most of northern Eurasia from its establishment in November 1721 until the proclamation of the Russian Republic in September 1917. At its height in the late 19th century, it covered about , roughl ...
. Only in southern
Warmia Warmia ( ; Latin: ''Varmia'', ''Warmia''; ; Warmian subdialect, Warmian: ''Warńija''; Old Prussian language, Old Prussian: ''Wārmi'') is both a historical and an ethnographic region in northern Poland, forming part of historical Prussia (reg ...
Catholic Poles – so called Warmiaks (not to be confused with predominantly Protestant Masurians) – comprised the majority of population, numbering 26,067 people (≈81%) in county Allenstein (Polish:
Olsztyn Olsztyn ( , ) is a city on the Łyna River in northern Poland. It is the capital of the Warmian-Masurian Voivodeship, and is a city with powiat rights, city with county rights. The population of the city was estimated at 169,793 residents Olsz ...
) in 1837. Another minority in pre-war East Prussia were ethnically Russian
Old Believers Old Believers or Old Ritualists ( Russian: староверы, ''starovery'' or старообрядцы, ''staroobryadtsy'') is the common term for several religious groups, which maintain the old liturgical and ritual practices of the Russian ...
, also known as Philipponnen – their main town was Eckertsdorf ( Wojnowo), in Sensburg district. In year 1817, East Prussia had 796,204
Evangelical Christians Evangelicalism (), also called evangelical Christianity or evangelical Protestantism, is a worldwide, interdenominational movement within Protestant Christianity that emphasizes evangelism, or the preaching and spreading of the Christian g ...
, 120,123
Roman Catholics The Catholic Church (), also known as the Roman Catholic Church, is the largest Christian church, with 1.27 to 1.41 billion baptized Catholics worldwide as of 2025. It is among the world's oldest and largest international institut ...
, 864
Mennonites Mennonites are a group of Anabaptism, Anabaptist Christianity, Christian communities tracing their roots to the epoch of the Radical Reformation. The name ''Mennonites'' is derived from the cleric Menno Simons (1496–1561) of Friesland, part of ...
and 2,389 Jews.


Ethnolinguistic composition by district

As of 1905, the province of East Prussia was divided into three government regions, known as ''Regierungsbezirke.'' These were the regions of
Königsberg Königsberg (; ; ; ; ; ; , ) is the historic Germany, German and Prussian name of the city now called Kaliningrad, Russia. The city was founded in 1255 on the site of the small Old Prussians, Old Prussian settlement ''Twangste'' by the Teuton ...
,
Gumbinnen Gusev (; ; ; ) is a town and the administrative center of Gusevsky District of Kaliningrad Oblast, Russia, located at the confluence of the Pissa and Krasnaya Rivers, near the border with Poland and Lithuania, east of Chernyakhovsk. It is p ...
and Allenstein.


Administration

The Prussian central government appointed for every province an ''Oberpräsident'' ("Upper President") carrying out central prerogatives on the provincial level and supervising the implementation of central policy on the lower levels of administration. Since 1875, with the strengthening of self-rule, the urban and rural districts (''Kreise'') within each province (sometimes within each
governorate A governorate or governate is an administrative division headed by a governor. As English-speaking nations tend to call regions administered by governors either states or provinces, the term ''governorate'' is typically used to calque divisions ...
) formed a corporation with common tasks and assets (schools, traffic installations, hospitals, cultural institutions, jails etc.) called the Provinzialverband (provincial association). Initially the assemblies of the urban and rural districts elected representatives for the provincial diets (''Provinzial
landtag A ''Landtag'' (State Diet) is generally the legislative assembly or parliament of a federated state or other subnational self-governing entity in German-speaking nations. It is usually a unicameral assembly exercising legislative competence ...
e''), which were thus indirectly elected. As of 1919 the provincial diets (or as to governorate diets, the so-called Kommunallandtage) were directly elected by the citizens of the provinces (or governorates, respectively). These parliaments legislated within the competences transferred to the provincial associations. The provincial diet of East Prussia elected a provincial executive body (government), the provincial committee (''Provinzialausschuss''), and a head of province, the ''
Landeshauptmann The Landeshauptmann (if male) or Landeshauptfrau (if female) (, "state captain", plural ''Landeshauptleute,'' ) is the chairman of a state government and the supreme official of an Austrian state and the Italian autonomous provinces of South Ty ...
'' ("Land Captain"; till the 1880s titled Landdirektor, land director).


Upper presidents of East Prussia and Prussia

: 1765–1791: Johann Friedrich von Domhardt, president of the ''
Gumbinnen Gusev (; ; ; ) is a town and the administrative center of Gusevsky District of Kaliningrad Oblast, Russia, located at the confluence of the Pissa and Krasnaya Rivers, near the border with Poland and Lithuania, east of Chernyakhovsk. It is p ...
and
Königsberg Königsberg (; ; ; ; ; ; , ) is the historic Germany, German and Prussian name of the city now called Kaliningrad, Russia. The city was founded in 1255 on the site of the small Old Prussians, Old Prussian settlement ''Twangste'' by the Teuton ...
War and Demesnes Chambers'' : 1791–1808:
Friedrich Leopold von Schrötter Friedrich may refer to: Names *Friedrich (given name) Friedrich is a German given name and the origin of the English Frederick (given name), Frederick. People with the name include: Arts * Friedrich Silaban (1912–1984), Indonesian architect ...
, president of the ''Gumbinnen and Königsberg War and Demesnes Chambers'', as of 1795 Minister for East and New East Prussia : 1808–1814: vacancy? : 1814–1824: Hans Jakob von Auerswald, upper president of East Prussia : 1824–1842:
Heinrich Theodor von Schön Heinrich may refer to: People * Heinrich (given name), a given name (including a list of people with the name) * Heinrich (surname), a surname (including a list of people with the name) *Hetty (given name), a given name (including a list of peo ...
, upper president of
Prussia Prussia (; ; Old Prussian: ''Prūsija'') was a Germans, German state centred on the North European Plain that originated from the 1525 secularization of the Prussia (region), Prussian part of the State of the Teutonic Order. For centuries, ...
, merged from East and West Prussia, since 1816 already upper president of West Prussia : 1842–1848: Carl Wilhelm von Bötticher, upper president of Prussia : 1848–1849:
Rudolf von Auerswald Rudolf Ludwig Cäsar von Auerswald (1 September 1795 – 15 January 1866) was a German official who served as Prime Minister of Prussia during the Revolution of 1848. Later, during the ministry of Charles Anthony, Prince of Hohenzollern, h ...
, upper president of Prussia : 1849–1850: Eduard Heinrich von Flottwell (1786–1865), upper president of Prussia : 1850–1868: Franz August Eichmann, upper president of Prussia : 1868–1869: vacancy : 1869–1882: Carl Wilhelm Heinrich Georg von Horn, upper president of Prussia, after 1878 of East Prussia : 1882–1891: Albrecht Heinrich von Schlieckmann, upper president of East Prussia : 1891–1895: Count Udo zu Stolberg-Wernigerode, upper president of East Prussia : 1895–1901: Count Wilhelm von Bismarck-Schönhausen, upper president of East Prussia : 1901–1903: Hugo Samuel von Richthofen, upper president of East Prussia : 1903–1907: Count Friedrich von Moltke, upper president of East Prussia : 1907–1914: Ludwig von Windheim, upper president of East Prussia : 1914–1916: Adolf Tortilowicz von Batocki-Friebe, upper president of East Prussia : 1916–1918: Friedrich von Berg, upper president of East Prussia : 1918–1919: Adolf Tortilowicz von Batocki-Friebe, upper president of East Prussia : 1919–1920: August Winnig ( SPD), upper president of East Prussia : 1920–1932: Ernst Siehr ( DDP), upper president of East Prussia : 1932–1933: Wilhelm Kutscher ( DNVP), upper president of East Prussia : 1933–1945: Erich Koch (
NSDAP The Nazi Party, officially the National Socialist German Workers' Party ( or NSDAP), was a far-right political party in Germany active between 1920 and 1945 that created and supported the ideology of Nazism. Its precursor, the German Workers ...
), upper president of East Prussia


Elections to the provincial diets

, -style="background:#E9E9E9;" !colspan="2" align="left", Parties !%
1921 !+/-
1921 !Seats
1921 !+/-
1921 !%
1925 !+/-
1925 !Seats
1925 !+/-
1925 !%
1929 !+/-
1929 !Seats
1929 !+/-
1929 !%
1933 !+/-
1933 !Seats
1933 !+/-
1933 , - , bgcolor="red", , align="left", SPD , 24.1 , , 20 , , rowspan="1", 24.8 , rowspan="2", +0.7 (-) , rowspan="2", 22 , rowspan="2", +2 (−4) , rowspan="2", 26 , rowspan="2", +1.2 , rowspan="2", 23 , rowspan="2", +1 , rowspan="2", 13.6 , rowspan="2", -12.4 , rowspan="2", 12 , rowspan="2", -11 , - , bgcolor="#ff2222", , align="left", USPD , , , 6 , +6 , merged
in SPD , - , bgcolor="#63B8ff", , align="left", DNVPIn 1933 the DNVP ran under the list KFSWR, also including '' Der Stahlhelm'' and the LB. , 13.4 , +13.4 , 11 , +11 , rowspan="2", 45.6 , rowspan="2", , rowspan="2", 40 , rowspan="2", (+4) , 31.2 , (+17.8) , 27 , (+16) , 12.7 , −18.5 , 11 , −16 , - , bgcolor="blue", , align="left", DVP , 3.6 , +3.6 , 4 , +4 , 8.7 , (+5.1) , 8 , (+4) , , , 0 , −8 , - , bgcolor="turquoise", , align="left", BWA , , , 16 , +16 , , , 0 , −16 , , , 0 , 0 , , , 0 , 0 , - , bgcolor="#0000CD", , align="left", Zentrum , 9.3 , , 8 , +8 , 6.9 , −2.4 , 6 , −2 , 8.1 , +1.2 , 7 , +1 , 7 , −1.1 , 7 , 0 , - , bgcolor="#8B0000", , align="left", KPD , 7 , +7 , 6 , +6 , 6.9 , −0.1 , 6 , 0 , 8.6 , +1.7 , 8 , +2 , 6 , −2.6 , 6 , −2 , - , bgcolor="black", , align="left", BWW , , , 6 , +6 , , , 0 , −6 , , , 0 , 0 , , , 0 , 0 , - !colspan="2" align="left", Parties !%
1921 !+/-
1921 !Seats
1921 !+/-
1921 !%
1925 !+/-
1925 !Seats
1925 !+/-
1925 !%
1929 !+/-
1929 !Seats
1929 !+/-
1929 !%
1933 !+/-
1933 !Seats
1933 !+/-
1933 , - , bgcolor="yellow", , align="left", DDP , 5.7 , +5.7 , 6 , +6 , 3.6 , −2.1 , 3 , −3 , 2.8 , −0.8 , 3 , 0 , , , 0 , −3 , - , bgcolor="brown", , align="left",
NSDAP The Nazi Party, officially the National Socialist German Workers' Party ( or NSDAP), was a far-right political party in Germany active between 1920 and 1945 that created and supported the ideology of Nazism. Its precursor, the German Workers ...
, not run , not run , not run , not run , , , , , 4.3 , , 4 , +4 , 58.2 , +53,9 , 51 , +47 , - , bgcolor="#CEB673", , align="left", LL/ WPIn 1921 the Landliste (LL, Rural List) gained two seats, in 1926 the LL formed a united list with the WP and the East Prussian Farmers' Federation (OBB), in 1929 they all ran as part of the WP. , , , 2 , +2 , 4.2 , +4.2 , 4 , +2 , 4 , −1.2 , 4 , 0 , , , 0 , −4 , - , bgcolor="#645D25", , align="left", DFP , not run , not run , not run , not run , 4.2 , +4.2 , 4 , +4 , , , 0 , −4 , , , 0 , 0 , - , bgcolor="purple", , align="left", CSVD , not run , not run , not run , not run , not run , not run , not run , not run , 3 , +3 , 3 , +3 , , , 0 , −3 , - , bgcolor="#ffDEAD", , align="left", AuA , not run , not run , not run , not run , , , 2 , +2 , , , 0 , −2 , , , 0 , 0 , - , bgcolor="green", , align="left", FOW , , , 2 , +2 , , , 0 , −2 , , , 0 , 0 , , , 0 , 0 , - , bgcolor="#553A26", , align="left", Poles' Party , , , 1 , +1 , , , 0 , −1 , , , 0 , 0 , , , 0 , 0 , - , bgcolor="#eeeeee", , align="left", Others , , , 2 , +? , , , 0 , −2 , , , 0 , 0 , , , 0 , 0 , -style="background:#E9E9E9;" !colspan="2" align="left", Total
1921 !align="center" colspan="2", !align="center" colspan="1", 85 ! !colspan="2" align="left", Total
1925 !align="center" colspan="1", 87 ! !colspan="2" align="left", Total
1929 !align="center" colspan="1", 87 ! !colspan="2" align="left", Total
1933 !align="center" colspan="1", 87 !


Land Directors and Land Captains of East Prussia

: 1876–1878: Heinrich Edwin Rickert ( NLP, later DFP), titled land director : 1878–1884: Kurt von Saucken-Tarputschen ( Fortschritt, later DFP), titled land director : 1884–1888: Alfred von Gramatzki ( DKP), titled land director : 1888–1896: Klemens von Stockhausen, titled land director : 1896–1909: Rudolf von Brandt, titled land captain : 1909–1916: Friedrich von Berg, titled land captain : 1916–1928:
Manfred Graf von Brünneck-Bellschwitz ''Manfred: A dramatic poem'' is a closet drama written in 1816–1817 by Lord Byron. It contains supernatural elements, in keeping with the popularity of the ghost story in England at the time. It is a typical example of Gothic fiction. Byr ...
, titled land captain : 1928–1936: Paul Blunk, titled land captain : 1936–1941: Helmuth von Wedelstädt (
NSDAP The Nazi Party, officially the National Socialist German Workers' Party ( or NSDAP), was a far-right political party in Germany active between 1920 and 1945 that created and supported the ideology of Nazism. Its precursor, the German Workers ...
), titled land captain : 1941–1945: vacancy : 1941–1945: Reinhard Bezzenberger, first land councillor, per pro


Cities and towns


See also

*
Drang nach Osten (; 'Drive to the East',Ulrich Best''Transgression as a Rule: German–Polish cross-border cooperation, border discourse and EU-enlargement'' 2008, p. 58, Edmund Jan Osmańczyk, Anthony Mango, ''Encyclopedia of the United Nations and Internati ...
* Königsberger Klopse * Königsberg marzipan *
Landsmannschaft Ostpreußen The Landsmannschaft Ostpreußen ("Homeland Association of East Prussia") is a non-profit organization for Germans who were evacuated or expelled from East Prussia during World War II and as well as people who emigrated in more recent times, exe ...
* East Prussian Regional Museum *


Explanatory notes


Citations


General bibliography

; Publications in English *
Baedeker Verlag Karl Baedeker, founded by Karl Baedeker on 1 July 1827, is a German publisher and pioneer in the business of worldwide travel guides. The guides, often referred to simply as "List of Baedeker Guides, Baedekers" (a term sometimes used to re ...
, Karl, ''Northern Germany'', 14th revised edition, London, 1904. * (on the years 1944/45) * Alfred-Maurice de Zayas, " Nemesis at Potsdam". London, 1977. . * Alfred-Maurice de Zayas, ''A Terrible Revenge: The Ethnic Cleansing of the East European Germans, 1944–1950'', 1994, * Carsten, F. L. "East Prussia". ''History'' 33#119 (1948), pp. 241–246. . Historiography of medieval and early modern period. * Dickie, Reverend J.F., with E.Compton, ''Germany'',
A & C Black A & C Black is a British book publishing company, owned since 2002 by Bloomsbury Publishing. The company is noted for publishing ''Who's Who'' since 1849 and the ''Encyclopædia Britannica'' between 1827 and 1903. It offers a wide variety of boo ...
, London, 1912. * Douglas, R.M.: Orderly and Humane. The Expulsion of the Germans after the Second World War. Yale University Press, 2012. . * von Treitschke, Heinrich, ''History of Germany'' – vol.1: ''The Wars of Emancipation'', (translated by E & C Paul),
Allen & Unwin George Allen & Unwin was a British publishing company formed in 1911 when Sir Stanley Unwin purchased a controlling interest in George Allen & Co. It became one of the leading publishers of the twentieth century and established an Australian ...
, London, 1915. * Powell, E. Alexander, ''Embattled Borders'', London, 1928. * Prausser, Steffen and Rees, Arfon: The Expulsion of the "German" Communities from Eastern Europe at the End of the Second World War. Florence, Italy, European University Institute, 2004. * Naimark, Norman: Fires of Hatred. Ethnic Cleansing in Twentieth-Century Europe. Cambridge, Harvard University Press, 2001. * Steed, Henry Wickham, ''Vital Peace – A Study of Risks'', Constable & Co., London, 1936. * Newman, Bernard, ''Danger Spots of Europe'', London, 1938. * Wieck, Michael: ''A Childhood Under Hitler and Stalin: Memoirs of a "Certified Jew"'', University of Wisconsin Press, 2003, . * Woodward, E.L., Butler, Rohan; Medlicott, W.N., Dakin, Douglas, & Lambert, M.E., et al. (editors), ''Documents on British Foreign Policy 1919–1939'', Three Series, Her Majesty's Stationery Office (
HMSO The Office of Public Sector Information (OPSI) is the body responsible for the operation of His Majesty's Stationery Office (HMSO) and of other public information services of the United Kingdom. The OPSI is part of the National Archives of the U ...
), London, numerous volumes published over 25 years. Cover the
Versailles Treaty The Treaty of Versailles was a peace treaty signed on 28 June 1919. As the most important treaty of World War I, it ended the state of war between Germany and most of the Allied Powers. It was signed in the Palace of Versailles, exactl ...
including all secret meetings; plebiscites and all other problems in Europe; includes all diplomatic correspondence from all states. * Previté-Orton, C.W., professor, ''The Shorter Cambridge Medieval History'',
Cambridge University Press Cambridge University Press was the university press of the University of Cambridge. Granted a letters patent by King Henry VIII in 1534, it was the oldest university press in the world. Cambridge University Press merged with Cambridge Assessme ...
, 1952 (2 volumes). * Balfour, Michael, and John Mair, ''Four-Power Control in Germany and Austria 1945–1946'',
Oxford University Press Oxford University Press (OUP) is the publishing house of the University of Oxford. It is the largest university press in the world. Its first book was printed in Oxford in 1478, with the Press officially granted the legal right to print books ...
, 1956. * Kopelev, Lev, ''To Be Preserved Forever'', ("Хранить вечно"), 1976. * Koch, H.W., professor, ''A History of Prussia'',
Longman Longman, also known as Pearson Longman, is a publisher, publishing company founded in 1724 in London, England, which is owned by Pearson PLC. Since 1968, Longman has been used primarily as an imprint by Pearson's Schools business. The Longman ...
, London, 1978/1984, (P/B), * Koch, H.W., professor, ''A Constitutional History of Germany in the 19th and 20th Centuries'',
Longman Longman, also known as Pearson Longman, is a publisher, publishing company founded in 1724 in London, England, which is owned by Pearson PLC. Since 1968, Longman has been used primarily as an imprint by Pearson's Schools business. The Longman ...
, London, 1984, (P/B), * MacDonogh, Giles, ''Prussia'',
Sinclair-Stevenson Sinclair-Stevenson Ltd was a British publisher founded in 1989 by Christopher Sinclair-Stevenson. Christopher Sinclair-Stevenson became an editor at Hamish Hamilton Hamish Hamilton Limited is a publishing imprint and originally a British p ...
, London, 1994, * Nitsch, Gunter, ''Weeds Like Us'', AuthorHouse, 2006, * * ; Publications in German * B. Schumacher: ''Geschichte Ost- und Westpreussens'', Würzburg 1959 * Boockmann, Hartmut: ''Ostpreußen und Westpreußen'' (= Deutsche Geschichte im Osten Europas). Siedler, Berlin 1992, * Buxa, Werner and Hans-Ulrich Stamm: ''Bilder aus Ostpreußen'' * Dönhoff, Marion Gräfin v. : ''Namen die keiner mehr nennt – Ostpreußen, Menschen und Geschichte'' * Dönhoff, Marion Gräfin v.: ''Kindheit in Ostpreussen'' * Falk, Lucy: ''Ich Blieb in Königsberg. Tagebuchblätter aus dunklen Nachkriegsjahren'' * Kibelka, Ruth: ''Ostpreußens Schicksaljahre, 1945–1948'' * * Nitsch, Gunter: "Eine lange Flucht aus Ostpreußen", Ellert & Richter Verlag, 2011, * Wieck, Michael: ''Zeugnis vom Untergang Königsbergs: Ein "Geltungsjude" berichtet,'' Heidelberger Verlaganstalt, 1990, 1993, . ; Publications in French * Pierre Benoît, ''Axelle'' * Georges Blond, ''L'Agonie de l'Allemagne'' * Michel Tournier, ''Le Roi des aulnes'' ; Publications in Polish * * * *


External links


Pictures of East Prussia
Large archive
Brandenburg Prince-Electors co-inheritors 1568, co-regent 1577



Extensive East & West Prussian Historical Materials





Ostpreußen.net

Ostpreußen Info – East Prussia Information

East- and West Prussia in Photos

''Spuren der Vergangenheit / Следы Пρошлого'' (Traces of the past)
This site by W.A. Milowskij, a Kaliningrad resident, contains hundreds of interesting photos, often with text explanations, of architectural and infrastructural artifacts of the territory's long German past

*
Britannica 2007 article


An oral history project, documenting the German history of East Prussia with memories and reports by contemporary witnesses
East & West Prussia Map Collection

Historical borders of East Prussia
{{Authority control Provinces of Prussia Baltic-German history 1773 establishments in Prussia Former exclaves Kingdom of Prussia Regions of Europe Historical regions Partition (politics) 1945 disestablishments in Germany Former eastern territories of Germany Germany–Poland relations (1918–1939)