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Seventeen days after the
German German(s) may refer to: * Germany (of or related to) **Germania (historical use) * Germans, citizens of Germany, people of German ancestry, or native speakers of the German language ** For citizens of Germany, see also German nationality law **Ge ...
invasion of Poland The invasion of Poland (1 September – 6 October 1939) was a joint attack on the Republic of Poland by Nazi Germany and the Soviet Union which marked the beginning of World War II. The German invasion began on 1 September 1939, one week af ...
in 1939, which marked the beginning of the
Second World War World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposi ...
, the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nationa ...
entered the eastern regions of
Poland Poland, officially the Republic of Poland, is a country in Central Europe. It is divided into 16 administrative provinces called voivodeships, covering an area of . Poland has a population of over 38 million and is the fifth-most populou ...
(known as the ''
Kresy Eastern Borderlands ( pl, Kresy Wschodnie) or simply Borderlands ( pl, Kresy, ) was a term coined for the eastern part of the Second Polish Republic during the History of Poland (1918–1939), interwar period (1918–1939). Largely agricultural ...
'') and annexed territories totalling with a population of 13,299,000. Inhabitants besides ethnic
Poles Poles,, ; singular masculine: ''Polak'', singular feminine: ''Polka'' or Polish people, are a West Slavic nation and ethnic group, who share a common history, culture, the Polish language and are identified with the country of Poland in ...
included Belarusian and
Ukrainian Ukrainian may refer to: * Something of, from, or related to Ukraine * Something relating to Ukrainians, an East Slavic people from Eastern Europe * Something relating to demographics of Ukraine in terms of demography and population of Ukraine * So ...
major population groups, and also
Czechs The Czechs ( cs, Češi, ; singular Czech, masculine: ''Čech'' , singular feminine: ''Češka'' ), or the Czech people (), are a West Slavic ethnic group and a nation native to the Czech Republic in Central Europe, who share a common ancestry, ...
,
Lithuanians Lithuanians ( lt, lietuviai) are a Baltic ethnic group. They are native to Lithuania, where they number around 2,378,118 people. Another million or two make up the Lithuanian diaspora, largely found in countries such as the United States, Unite ...
,
Jews Jews ( he, יְהוּדִים, , ) or Jewish people are an ethnoreligious group and nation originating from the Israelites Israelite origins and kingdom: "The first act in the long drama of Jewish history is the age of the Israelites""The ...
, and other minority groups. These annexed territories were subsequently incorporated into the Lithuanian, Byelorussian, and
Ukrainian Ukrainian may refer to: * Something of, from, or related to Ukraine * Something relating to Ukrainians, an East Slavic people from Eastern Europe * Something relating to demographics of Ukraine in terms of demography and population of Ukraine * So ...
Soviet Socialist Republics The Republics of the Union of Soviet Socialist Republics or the Union Republics ( rus, Сою́зные Респу́блики, r=Soyúznye Respúbliki) were national-based administrative units of the Union of Soviet Socialist Republics ( ...
and remained within the Soviet Union in 1945 as a consequence of European-wide territorial rearrangements configured during the
Tehran Conference The Tehran Conference ( codenamed Eureka) was a strategy meeting of Joseph Stalin, Franklin Roosevelt, and Winston Churchill from 28 November to 1 December 1943, after the Anglo-Soviet invasion of Iran. It was held in the Soviet Union's embass ...
of 1943 (see
Western Betrayal Western betrayal is the view that the United Kingdom, France, and sometimes the United States failed to meet their legal, diplomatic, military, and moral obligations with respect to the Czechoslovak and Polish states during the prelude to and ...
). Poland was "compensated" for this territorial loss with the pre-War German eastern territories, at the expense of losing its eastern regions. The
Polish People's Republic The Polish People's Republic ( pl, Polska Rzeczpospolita Ludowa, PRL) was a country in Central Europe that existed from 1947 to 1989 as the predecessor of the modern Republic of Poland. With a population of approximately 37.9 million ne ...
regime described the territories as the "
Recovered Territories The Recovered Territories or Regained Lands ( pl, Ziemie Odzyskane), also known as Western Borderlands ( pl, Kresy Zachodnie), and previously as Western and Northern Territories ( pl, Ziemie Zachodnie i Północne), Postulated Territories ( pl, Z ...
". The number of Poles in the Kresy in the year 1939 was around 5.274 million, but after
ethnic cleansing Ethnic cleansing is the systematic forced removal of ethnic, racial, and religious groups from a given area, with the intent of making a region ethnically homogeneous. Along with direct removal, extermination, deportation or population transfer ...
in 1939-1945 by Nazi Germany, the Soviet Union and Ukrainian nationalist forces consisted of approximately 1.8 million inhabitants. The post-World War II territory of Poland was significantly smaller than the pre-1939 land areas, shrinking by some (roughly equalling that of the territories of
Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to ...
and the
Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Netherlands , established_title = Before independence , established_date = Spanish Netherl ...
combined).


Molotov–Ribbentrop Pact

Early in the morning of August 24, 1939, the Soviet Union and
Nazi Germany Nazi Germany (lit. "National Socialist State"), ' (lit. "Nazi State") for short; also ' (lit. "National Socialist Germany") (officially known as the German Reich from 1933 until 1943, and the Greater German Reich from 1943 to 1945) was ...
signed a 10-year non-aggression pact, called the
Molotov–Ribbentrop pact , long_name = Treaty of Non-Aggression between Germany and the Union of Soviet Socialist Republics , image = Bundesarchiv Bild 183-H27337, Moskau, Stalin und Ribbentrop im Kreml.jpg , image_width = 200 , caption = Stalin and Ribbentrop shaking ...
. Most notably, the pact contained a secret protocol, revealed only after Germany's defeat in 1945, according to which the states of
Northern Northern may refer to the following: Geography * North, a point in direction * Northern Europe, the northern part or region of Europe * Northern Highland, a region of Wisconsin, United States * Northern Province, Sri Lanka * Northern Range, a r ...
and
Eastern Europe Eastern Europe is a subregion of the European continent. As a largely ambiguous term, it has a wide range of geopolitical, geographical, ethnic, cultural, and socio-economic connotations. The vast majority of the region is covered by Russia, whi ...
were divided into German and Soviet " spheres of influence".''Text of the Nazi-Soviet Non-Aggression Pact''
executed August 23, 1939
In the North,
Finland Finland ( fi, Suomi ; sv, Finland ), officially the Republic of Finland (; ), is a Nordic country in Northern Europe. It shares land borders with Sweden to the northwest, Norway to the north, and Russia to the east, with the Gulf of Bot ...
,
Estonia Estonia, formally the Republic of Estonia, is a country by the Baltic Sea in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the sea across from Sweden, to the south by Latvia, an ...
and
Latvia Latvia ( or ; lv, Latvija ; ltg, Latveja; liv, Leţmō), officially the Republic of Latvia ( lv, Latvijas Republika, links=no, ltg, Latvejas Republika, links=no, liv, Leţmō Vabāmō, links=no), is a country in the Baltic region of ...
were assigned to the Soviet sphere. Poland was to be partitioned in the event of its "political rearrangement"—the areas east of the Narev,
Vistula The Vistula (; pl, Wisła, ) is the longest river in Poland and the ninth-longest river in Europe, at in length. The drainage basin, reaching into three other nations, covers , of which is in Poland. The Vistula rises at Barania Góra in ...
and San Rivers going to the Soviet Union while Germany would occupy the west. Initially annexed by Poland in a series of wars between 1918 and 1921 (primarily the Polish-Soviet War), these territories had mixed urban national populations with
Poles Poles,, ; singular masculine: ''Polak'', singular feminine: ''Polka'' or Polish people, are a West Slavic nation and ethnic group, who share a common history, culture, the Polish language and are identified with the country of Poland in ...
and
Ukrainians Ukrainians ( uk, Українці, Ukraintsi, ) are an East Slavic ethnic group native to Ukraine. They are the seventh-largest nation in Europe. The native language of the Ukrainians is Ukrainian. The majority of Ukrainians are Eastern Ort ...
being the most numerous ethnic groups, with significant minorities of
Belarusians , native_name_lang = be , pop = 9.5–10 million , image = , caption = , popplace = 7.99 million , region1 = , pop1 = 600,000–768,000 , region2 = , pop2 ...
and
Jews Jews ( he, יְהוּדִים, , ) or Jewish people are an ethnoreligious group and nation originating from the Israelites Israelite origins and kingdom: "The first act in the long drama of Jewish history is the age of the Israelites""The ...
. Also in: ''Wrocławskie Studia Wschodnie'', Wrocław, 1997. Much of this rural territory had its own significant local non-Polish majority (Ukrainians in the south and Belarusians in the north).
Jan Tomasz Gross Jan Tomasz Gross (born 1947) is a Polish-American sociologist and historian. He is the Norman B. Tomlinson '16 and '48 Professor of War and Society, emeritus, and Professor of History, emeritus, at Princeton University. Gross is the author of ...
, ''Revolution from Abroad'', pp. 4, 5, Princeton, 2005,
Google books link)
/ref>
Lithuania Lithuania (; lt, Lietuva ), officially the Republic of Lithuania ( lt, Lietuvos Respublika, links=no ), 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. Lithuania ...
, adjacent to
East Prussia East Prussia ; german: Ostpreißen, label= Low Prussian; pl, Prusy Wschodnie; lt, Rytų Prūsija was a province of the Kingdom of Prussia from 1773 to 1829 and again from 1878 (with the Kingdom itself being part of the German Empire from 187 ...
, would be in the German sphere of influence, although a second secret protocol agreed in September 1939 assigned the majority of Lithuania to the USSR.Christie, Kenneth, ''Historical Injustice and Democratic Transition in Eastern Asia and Northern Europe: Ghosts at the Table of Democracy'', RoutledgeCurzon, 2002, According to the secret protocol, Lithuania would retrieve its historical capital
Vilnius Vilnius ( , ; see also other names) is the capital and largest city of Lithuania, with a population of 592,389 (according to the state register) or 625,107 (according to the municipality of Vilnius). The population of Vilnius's functional urba ...
, subjugated during the inter-war period by
Poland Poland, officially the Republic of Poland, is a country in Central Europe. It is divided into 16 administrative provinces called voivodeships, covering an area of . Poland has a population of over 38 million and is the fifth-most populou ...
.


Soviet annexation of eastern Poland, 1939–1941

The Polish–Soviet border, as of 1939, had been determined in 1921 at the
Treaty of Riga The Peace of Riga, also known as the Treaty of Riga ( pl, Traktat Ryski), was signed in Riga on 18 March 1921, among Poland, Soviet Russia (acting also on behalf of Soviet Belarus) and Soviet Ukraine. The treaty ended the Polish–Soviet War. ...
peace talks, which followed the
Polish–Soviet War The Polish–Soviet War (Polish–Bolshevik War, Polish–Soviet War, Polish–Russian War 1919–1921) * russian: Советско-польская война (''Sovetsko-polskaya voyna'', Soviet-Polish War), Польский фронт (' ...
. Under the terms of the Molotov–Ribbentrop Pact, two weeks after the German invasion of western Poland, the Soviet Union invaded the portions of eastern Poland assigned to it by the Pact, followed by co-ordination with German forces in Poland. See map. The "need to protect" the Ukrainian and Belarusian majority populations was used as a pretext for Soviet invasion of Eastern Poland (including Western Ukraine and Belarus) carried out in the wake of Poland's dismemberment under the Nazi invasion with Warsaw being besieged and Poland's government being in the process of evacuation.''Telegram of the German Ambassador in the Soviet Union, (Schulenburg) to the German Foreign Office Moscow,'' Moscow, September 16 : ''...the Soviet Union had thus far not concerned itself about the plight of its minorities in Poland and had to justify abroad, in some way or other, its present intervention. The total area, including the area given to Lithuania, was , with a population of 13.299 million, of which 5.274 million were ethnic Poles and 1.109 million were Jews. An additional 138,000 ethnic Poles and 198,000 Jews fled the German occupied zone and became refugees in the Soviet occupied region.Poland's Holocaust, Tadeusz Piotrowski, 1998 P.14 The borders were finalized in the September 28 German–Soviet Frontier Treaty, most of whose contents were kept secret. Soviet authorities immediately started a campaign of
sovietization Sovietization (russian: Советизация) is the adoption of a political system based on the model of soviets (workers' councils) or the adoption of a way of life, mentality, and culture modelled after the Soviet Union. This often included ...
. Passportization and residence registration of the population in the newly acquired territories began. Inhabitants of
Kresy Eastern Borderlands ( pl, Kresy Wschodnie) or simply Borderlands ( pl, Kresy, ) was a term coined for the eastern part of the Second Polish Republic during the History of Poland (1918–1939), interwar period (1918–1939). Largely agricultural ...
, on whom Soviet citizenship was imposed in November 1939, had to return documents issued by "former Poland" and obtain new citizenship of the USSR. The
NKVD The People's Commissariat for Internal Affairs (russian: Наро́дный комиссариа́т вну́тренних дел, Naródnyy komissariát vnútrennikh del, ), abbreviated NKVD ( ), was the interior ministry of the Soviet Union. ...
used the passportization system to carefully select people still living in Western Belarus and
Western Ukraine Western Ukraine or West Ukraine ( uk, Західна Україна, Zakhidna Ukraina or , ) is the territory of Ukraine linked to the former Kingdom of Galicia–Volhynia, which was part of the Polish–Lithuanian Commonwealth, the Austr ...
. Those who did not receive the citizenship or refused to accept it (claiming that they were Polish citizens or not agreeing to enter Ukrainian or Belarusian nationality) were arrested or deported. In March 1940, the authorities also decided about the fate of refugees from western Poland, who from September 1939 were in Kresy. Deportation of this group of about 75–80 thousand people, consisting mainly of Jews (about 84%), finally began on June 29, 1940, and lasted for nearly a month. The Soviets organized staged elections, the result of which was to become a legitimization of Soviet annexation of eastern Poland.
/ref> Soviet authorities attempted to erase Polish history and culture, withdrew the Polish złoty, Polish currency without exchanging
ruble The ruble (American English) or rouble (Commonwealth English) (; rus, рубль, p=rublʲ) is the currency unit of Belarus and Russia. Historically, it was the currency of the Russian Empire and of the Soviet Union. , currencies named ''rub ...
,
collectivized Collective farming and communal farming are various types of, "agricultural production in which multiple farmers run their holdings as a joint enterprise". There are two broad types of communal farms: agricultural cooperatives, in which member- ...
agriculture, Encyklopedia PWN, "OKUPACJA SOWIECKA W POLSCE 1939–41", last accessed on 1 March 2006
online
, Polish language
and
nationalized Nationalization (nationalisation in British English) is the process of transforming privately-owned assets into public assets by bringing them under the public ownership of a national government or state. Nationalization usually refers to p ...
and redistributed private and state-owned Polish property. Soviet authorities regarded service for the pre-war Polish state as a "crime against revolution" and "counter-revolutionary activity", and subsequently started arresting large numbers of Polish citizens. During the initial Soviet invasion of Poland, between 230,000 to 450,000 Poles were taken as prisoner, some of whom were executed. NKVD officers conducted lengthy interrogations of the prisoners in camps that were, in effect, a selection process to determine who would be killed. Fischer, Benjamin B.,
The Katyn Controversy: Stalin's Killing Field
, '' Studies in Intelligence'', Winter 1999-2000.
On March 5, 1940, pursuant to a note to Stalin from
Lavrenty Beria Lavrentiy Pavlovich Beria (; rus, Лавре́нтий Па́влович Бе́рия, Lavréntiy Pávlovich Bériya, p=ˈbʲerʲiə; ka, ლავრენტი ბერია, tr, ;  – 23 December 1953) was a Georgian Bolshevik ...
, the members of the Soviet
Politburo A politburo () or political bureau is the executive committee for communist parties. It is present in most former and existing communist states. Names The term "politburo" in English comes from the Russian ''Politbyuro'' (), itself a contracti ...
(including Stalin) signed an order to execute POWs, labeled "nationalists and counterrevolutionaries", kept at camps and prisons in occupied western Ukraine and Belarus. This became known as the
Katyn massacre The Katyn massacre, "Katyń crime"; russian: link=yes, Катынская резня ''Katynskaya reznya'', "Katyn massacre", or russian: link=no, Катынский расстрел, ''Katynsky rasstrel'', "Katyn execution" was a series of m ...
, in all some 22,000 were executed.
Sanford Sanford may refer to: People *Sanford (given name), including a list of people with the name *Sanford (surname), including a list of people with the name Places United States * Sanford, Alabama, a town in Covington County * Sanford, Colorado ...

Google Books, p. 20-24.
/ref> During
Perestroika ''Perestroika'' (; russian: links=no, перестройка, p=pʲɪrʲɪˈstrojkə, a=ru-perestroika.ogg) was a political movement for reform within the Communist Party of the Soviet Union (CPSU) during the late 1980s widely associated wit ...
, former top ministers of Stalin such as
Lazar Kaganovich Lazar Moiseyevich Kaganovich, also Kahanovich (russian: Ла́зарь Моисе́евич Кагано́вич, Lázar' Moiséyevich Kaganóvich; – 25 July 1991), was a Soviet politician and administrator, and one of the main associates of ...
and
Vyacheslav Molotov Vyacheslav Mikhaylovich Molotov. ; (;. 9 March Old_Style_and_New_Style_dates">O._S._25_February.html" ;"title="Old_Style_and_New_Style_dates.html" ;"title="nowiki/>Old Style and New Style dates">O. S. 25 February">Old_Style_and_New_Style_dat ...
claimed that in Katyn, of the 22,000 Polish officers, roughly 3,000 were killed by the NKVD in 1940, while others were later executed by Nazis. During 1939–1941 1.45 million of the people inhabiting the region were deported by the Soviet regime, of whom 63.1% were Poles, and 7.4% were Jews. Previously it was believed that about one million Polish citizens died at the hands of the Soviets, however recently Polish historians, based mostly on queries in Soviet archives, estimate the number of deaths at about 350,000 people deported in 1939–1945. Andrzej Paczkowski puts the number of Polish deaths at 90–100,000 of the 1.0 million persons deported and 30,000 executed by the Soviets. The
Vilnius region Vilnius Region is the territory in present-day Lithuania and Belarus that was originally inhabited by ethnic Baltic tribes and was a part of Lithuania proper, but came under East Slavic and Polish cultural influences over time. The territor ...
, annexed by Poland in 1920, was transferred to Lithuania on the basis of Lithuania-Soviet Union agreement. Other northern territories were attached to
Belastok Voblast Belastok Voblast or Belostok Oblast ( be, Беластоцкая вобласць, Biełastockaja vobłasć, russian: Белостокская Область, pl, Obwód białostocki) was a short-lived territorial unit in the Belarusian Soviet ...
,
Hrodna Voblast Grodno Region ( pl, Grodzieńszczyzna) or Grodno Oblast or Hrodna Voblasts ( be, Гродзенская вобласць, ''Hrodzienskaja vobłasć'', , ''Haradzienščyna''; russian: Гродненская область, ''Grodnenskaya oblast' ...
, Navahrudak Voblast (soon renamed to
Baranavichy Voblast russian: Барановичская Область , common_name = Baranavichy , subdivision = Voblast , nation = Byelorussian SSR , p1 = Navahrudak Voblast , flag_p1 = ...
),
Pinsk Voblast Pinsk Region (Pinsk Voblast, be, Пінская вобласць, russian: Пинская Область) was a territorial unit in the Byelorussian Soviet Socialist Republic created after the annexation of West Belarus into the BSSR in November ...
and Vileyka (later Maladzyechna) Voblast in
Byelorussian SSR The Byelorussian Soviet Socialist Republic (BSSR, or Byelorussian SSR; be, Беларуская Савецкая Сацыялістычная Рэспубліка, Bielaruskaja Savieckaja Sacyjalistyčnaja Respublika; russian: Белор� ...
. The territories to the south were transferred to the
Ukrainian SSR The Ukrainian Soviet Socialist Republic ( uk, Украї́нська Радя́нська Соціалісти́чна Респу́бліка, ; russian: Украи́нская Сове́тская Социалисти́ческая Респ ...
:
Drohobych Oblast Drohobych Oblast ( uk, Дрогобицька область, translit=Drohobytska oblast; December 4, 1939May 21, 1959) was an oblast in the Ukrainian SSR. It had a territory of 9.6 thousands of km³ and, as of 1956, population of 853,000. Histo ...
,
Lviv Oblast Lviv Oblast ( uk, Льві́вська о́бласть, translit=Lvivska oblast, ), also referred to as Lvivshchyna ( uk, Льві́вщина, ), ). The name of each oblast is a relational adjective—in English translating to a noun adjunct w ...
,
Rivne Oblast Rivne Oblast ( uk, Рі́вненська о́бласть, translit=Rivnenska oblast), also referred to as Rivnenshchyna ( uk, Рі́вненщина) is an oblast (province) of Ukraine. Its administrative center is Rivne. The surface area of th ...
, Stanislav (later known as Ivano-Frankivsk) Oblast, Tarnopil Oblast and
Volyn Oblast Volyn Oblast ( uk, Воли́нська о́бласть, translit=Volýnsʹka óblastʹ; also referred to as Volyn or Lodomeria) is an oblast (province) in northwestern Ukraine. Its administrative centre is Lutsk. Kovel is the westernmost town ...
.


German occupation 1941–1944

These areas were conquered by
Nazi Germany Nazi Germany (lit. "National Socialist State"), ' (lit. "Nazi State") for short; also ' (lit. "National Socialist Germany") (officially known as the German Reich from 1933 until 1943, and the Greater German Reich from 1943 to 1945) was ...
in 1941 during
Operation Barbarossa Operation Barbarossa (german: link=no, Unternehmen Barbarossa; ) was the invasion of the Soviet Union by Nazi Germany and many of its Axis allies, starting on Sunday, 22 June 1941, during the Second World War. The operation, code-named afte ...
. The Nazis divided them up as follows: * '' Bezirk Białystok'' (district of
Białystok Białystok is the largest city in northeastern Poland and the capital of the Podlaskie Voivodeship. It is the tenth-largest city in Poland, second in terms of population density, and thirteenth in area. Białystok is located in the Białystok U ...
), which included the Białystok,
Bielsk Podlaski Bielsk Podlaski ( be, Бельск Падляскі, , yi, ביעלסק, Bielsk) is a town in eastern Poland, within Bielsk County in the Podlaskie Voivodeship. As of December 2021, the town has a population of 24,883. Geography Bielsk Podlas ...
,
Grajewo Grajewo (, yi, גראיעווע, translit=Grayavah) is a town in north-eastern Poland with 21,499 inhabitants (2016). It is situated in the Podlaskie Voivodeship (since 1999); previously, it was in Łomża Voivodeship (1975–1998). It is the ...
,
Łomża Łomża (), in English known as Lomza, is a city in north-eastern Poland, approximately 150 kilometers (90 miles) to the north-east of Warsaw and west of Białystok. It is situated alongside the Narew river as part of the Podlaskie Voivodeship ...
,
Sokółka Sokółka (; lt, Sokulka, Sakalinė, be, Саку́лка, yi, סאקאלקע, Sokolke) is a town in northeastern Poland, seat of the Sokółka County in Podlaskie Voivodeship. It is a busy rail junction located on the international Warsaw–B ...
, Vaukavysk, and
Hrodna Grodno (russian: Гродно, pl, Grodno; lt, Gardinas) or Hrodna ( be, Гродна ), is a city in western Belarus. The city is located on the Neman River, 300 km (186 mi) from Minsk, about 15 km (9 mi) from the Polish b ...
counties and was "attached to" (not incorporated into)
East Prussia East Prussia ; german: Ostpreißen, label= Low Prussian; pl, Prusy Wschodnie; lt, Rytų Prūsija was a province of the Kingdom of Prussia from 1773 to 1829 and again from 1878 (with the Kingdom itself being part of the German Empire from 187 ...
; * ''
Generalbezirk Litauen Generalbezirk Litauen ( lt, Lietuvos generalinė sritis, ) was one of the four administrative subdivisions of ''Reichskommissariat Ostland'', the 1941-1945 civilian occupation regime established by Nazi Germany for the administration of the three ...
'' — the
Vilna Province The Vilna Governorate (1795–1915; also known as Lithuania Governorate, Lithuania-Vilnius Governorate from 1801 until 1840; russian: Виленская губерния, ''Vilenskaya guberniya'', lt, Vilniaus gubernija, pl, gubernia wileńs ...
was incorporated into
Lithuania Lithuania (; lt, Lietuva ), officially the Republic of Lithuania ( lt, Lietuvos Respublika, links=no ), 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. Lithuania ...
, itself incorporated into the
Reichskommissariat Ostland The Reichskommissariat Ostland (RKO) was established by Nazi Germany in 1941 during World War II. It became the civilian occupation regime in Estonia, Latvia, Lithuania, and the western part of Byelorussian SSR. German planning documents initi ...
; * '' Generalbezirk Weißruthenien'' — most of the Polish part of
White Ruthenia White Ruthenia ( cu, Бѣла Роусь, Bela Rous'; be, Белая Русь, Biełaja Ruś; pl, Ruś Biała; russian: Белая Русь, Belaya Rus'; ukr, Біла Русь, Bila Rus') alternatively known as Russia Alba, White Rus' or W ...
(the western section of modern-day
Belarus Belarus,, , ; alternatively and formerly known as Byelorussia (from Russian ). officially the Republic of Belarus,; rus, Республика Беларусь, Respublika Belarus. is a landlocked country in Eastern Europe. It is bordered by ...
) was incorporated into the
Reichskommissariat Ostland The Reichskommissariat Ostland (RKO) was established by Nazi Germany in 1941 during World War II. It became the civilian occupation regime in Estonia, Latvia, Lithuania, and the western part of Byelorussian SSR. German planning documents initi ...
; * '' Generalbezirk Wolhynien und Podolien'' — the Polish provinces of
Volhynia Volhynia (also spelled Volynia) ( ; uk, Воли́нь, Volyn' pl, Wołyń, russian: Волы́нь, Volýnʹ, ), is a historic region in Central and Eastern Europe, between south-eastern Poland, south-western Belarus, and western Ukraine. The ...
and
Polesie Polesia, Polesie, or Polesye, uk, Полісся (Polissia), pl, Polesie, russian: Полесье (Polesye) is a natural and historical region that starts from the farthest edge of Central Europe and encompasses Eastern Europe, including East ...
, which was incorporated into the
Reichskommissariat Ukraine During World War II, (abbreviated as RKU) was the civilian occupation regime () of much of Nazi German-occupied Ukraine (which included adjacent areas of modern-day Belarus and pre-war Second Polish Republic). It was governed by the Reic ...
; and * ''
District Galicia The District of Galicia (german: Distrikt Galizien, pl, Dystrykt Galicja, ua, Дистрикт Галичина) was a World War II administrative unit of the General Government created by Nazi Germany on 1 August 1941 after the start of O ...
'', East Galicia, which was incorporated into the
General Government The General Government (german: Generalgouvernement, pl, Generalne Gubernatorstwo, uk, Генеральна губернія), also referred to as the General Governorate for the Occupied Polish Region (german: Generalgouvernement für die be ...
and became its fifth district. During 1943–1944 ethnic cleansing operations took place in Ukraine (commonly known as the
Massacres of Poles in Volhynia The massacres of Poles in Volhynia and Eastern Galicia ( pl, rzeź wołyńska, lit=Volhynian slaughter; uk, Волинська трагедія, lit=Volyn tragedy, translit=Volynska trahediia), were carried out in German-occupied Poland by the ...
) which brought about an estimated 100,000 deaths and an exodus of ethnic Poles from this territory. The Polish and Jewish language population of the regions in 1939 totaled about 6.7 million. During the war, an estimated 2 million persons perished (including 1.2 million Jews). These numbers are included with Polish war losses. 2 million (including 250,000 Jews) became refugees to Poland or the West, 1.5 million were in the territories returned to Poland in 1945 and 1.2 million remained in the USSR.Krystyna Kersten, Szacunek strat osobowych w Polsce Wschodniej. Dzieje Najnowsze Rocznik XXI– 1994, p. 46 & 47 Contemporary Russian historians also include the war losses of Poles and Jews from this region with Soviet war dead.


Soviet 1945 re-annexation and incorporation of the majority of the territories

At the end of
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
, the Soviet Union annexed most of the territory it had invaded in 1939.


Preliminary arrangements

Soon after the Soviet re-entry to Poland in July 1944 in pursuit of the German army, the Polish prime minister from London flew to Moscow along with Churchill in an attempt to prevent the Soviet annexation of Poland in accordance with the Molotov–Ribbentrop Pact signed by the Soviet Union. He offered a smaller section of land, but Stalin declined, telling him that he would allow the exiled government to participate in the
Polish Committee of National Liberation The Polish Committee of National Liberation (Polish: ''Polski Komitet Wyzwolenia Narodowego'', ''PKWN''), also known as the Lublin Committee, was an executive governing authority established by the Soviet-backed communists in Poland at the la ...
. An agreement between the Allies was reluctantly reached at the
Yalta Conference The Yalta Conference (codenamed Argonaut), also known as the Crimea Conference, held 4–11 February 1945, was the World War II meeting of the heads of government of the United States, the United Kingdom, and the Soviet Union to discuss the post ...
where the Soviets would annex the entirety of their Molotov–Ribbentrop Pact portion of Eastern Poland but would grant Poland part of Eastern Germany in return. These agreements were then confirmed and consolidated at the
Potsdam Conference The Potsdam Conference (german: Potsdamer Konferenz) was held at Potsdam in the Soviet occupation zone from July 17 to August 2, 1945, to allow the three leading Allies to plan the postwar peace, while avoiding the mistakes of the Paris P ...
. Thereafter, eastern Poland was annexed into the
Ukrainian Soviet Socialist Republic The Ukrainian Soviet Socialist Republic ( uk, Украї́нська Радя́нська Соціалісти́чна Респу́бліка, ; russian: Украи́нская Сове́тская Социалисти́ческая Респ ...
and the
Byelorussian Soviet Socialist Republic The Byelorussian Soviet Socialist Republic (BSSR, or Byelorussian SSR; be, Беларуская Савецкая Сацыялістычная Рэспубліка, Bielaruskaja Savieckaja Sacyjalistyčnaja Respublika; russian: Белор� ...
. The Western Allies were unaware of the existence of the secret clause dividing Poland between Hitler and Stalin already in 1939 along the
Curzon Line The Curzon Line was a proposed demarcation line between the Second Polish Republic and the Soviet Union, two new states emerging after World War I. It was first proposed by The 1st Earl Curzon of Kedleston, the British Foreign Secretary, ...
.


Returned areas

Some parts of eastern Poland occupied by the Nazis in 1939 with an area of and 1.5 million inhabitants near
Białystok Białystok is the largest city in northeastern Poland and the capital of the Podlaskie Voivodeship. It is the tenth-largest city in Poland, second in terms of population density, and thirteenth in area. Białystok is located in the Białystok U ...
and
Przemyśl Przemyśl (; yi, פשעמישל, Pshemishl; uk, Перемишль, Peremyshl; german: Premissel) is a city in southeastern Poland with 58,721 inhabitants, as of December 2021. In 1999, it became part of the Subcarpathian Voivodeship; it was p ...
were returned to postwar Poland.


Border treaty

On August 16, 1945 the Communist-dominated
Provisional Government of National Unity The Provisional Government of National Unity ( pl, Tymczasowy Rząd Jedności Narodowej - TRJN) was a puppet government formed by the decree of the State National Council () on 28 June 1945 as a result of reshuffling the Soviet-backed Provisio ...
signed a treaty with the USSR to formally cede these territories. The total population of the territories annexed by the USSR, not including the portion returned to Poland in 1945, had an estimated population of 10,653,000 according to the 1931 Polish census. In 1939 this had increased to about 11.6 million. The composition by language group was
Ukrainian Ukrainian may refer to: * Something of, from, or related to Ukraine * Something relating to Ukrainians, an East Slavic people from Eastern Europe * Something relating to demographics of Ukraine in terms of demography and population of Ukraine * So ...
37.1%, Polish 36.5%, Belarusian 15.1%,
Yiddish Yiddish (, or , ''yidish'' or ''idish'', , ; , ''Yidish-Taytsh'', ) is a West Germanic language historically spoken by Ashkenazi Jews. It originated during the 9th century in Central Europe, providing the nascent Ashkenazi community with a ve ...
8.3%, Other 3%. Religious affiliation:
Eastern Orthodox Eastern Orthodoxy, also known as Eastern Orthodox Christianity, is one of the three main branches of Chalcedonian Christianity, alongside Catholicism and Protestantism. Like the Pentarchy of the first millennium, the mainstream (or " canonical ...
31.6%,
Roman Catholic Roman or Romans most often refers to: * Rome, the capital city of Italy *Ancient Rome, Roman civilization from 8th century BC to 5th century AD * Roman people, the people of ancient Rome *'' Epistle to the Romans'', shortened to ''Romans'', a let ...
30.1%,
Ukrainian Greek Catholic Church , native_name_lang = uk , caption_background = , image = StGeorgeCathedral Lviv.JPG , imagewidth = , type = Particular church (sui iuris) , alt = , caption = St. George's ...
26.7%, Jewish 9.9%, Other 1.7%.


Further events

From 1944 until 1952 the
Ukrainian Insurgent Army The Ukrainian Insurgent Army ( uk, Українська повстанська армія, УПА, translit=Ukrayins'ka povstans'ka armiia, abbreviated UPA) was a Ukrainian nationalist paramilitary and later partisan formation. During World ...
(UIA) were engaged in an armed struggle against the communists. As a result of the skirmishes between the UIA and Soviet units, the Soviets deported 600,000 people from these territories and in the process 170,000 of the local population were killed in the fighting. See also
Operation Vistula Operation Vistula ( pl, Akcja Wisła; uk, Опера́ція «Ві́сла») was a codename for the 1947 forced resettlement of 150,000 Ukrainians (Boykos and Lemkos) from the south-eastern provinces of post-war Poland, to the Recovered Te ...
. Vadim Erlikman. ''Poteri narodonaseleniia v XX veke : spravochnik''. Moscow 2004. pp. 22 & 34 In June 1951, the Soviet–Polish border was realigned in two areas.


See also

* Territories of Poland annexed by Nazi Germany *
Curzon Line The Curzon Line was a proposed demarcation line between the Second Polish Republic and the Soviet Union, two new states emerging after World War I. It was first proposed by The 1st Earl Curzon of Kedleston, the British Foreign Secretary, ...
* Oder-Neisse line *
Historical demographics of Poland The Poles come from different West Slavic tribes living on territories belonging later to Poland in the early Middle Ages. Kingdom of Poland (966–1569) Around the year 1000, the population of the Duchy of Poland is estimated at 1,000,000 t ...
* Occupation of Poland (1939–1945) * Polish Autonomous District *
Katyn massacre The Katyn massacre, "Katyń crime"; russian: link=yes, Катынская резня ''Katynskaya reznya'', "Katyn massacre", or russian: link=no, Катынский расстрел, ''Katynsky rasstrel'', "Katyn execution" was a series of m ...
* Soviet repressions of Polish citizens (1939–1946) * Polish Operation of the NKVD (1937–38) * Elections to the People's Assemblies of Western Ukraine and Western Belarus * Flight of Poles from the USSR *
Cursed soldiers The "cursed soldiers" (also known as "doomed soldiers", "accursed soldiers" or "damned soldiers"; pl, żołnierze wyklęci) or "indomitable soldiers" ( pl, żołnierze niezłomni) is a term applied to a variety of anti-Soviet and anti-communist ...
1944-1947


Notes


References

* * * * {{DEFAULTSORT:Territories Of Poland Annexed By The Soviet Union . P Annexation Eastern Bloc Molotov–Ribbentrop Pact Poland in World War II Territorial disputes of the Soviet Union Western Belorussia (1918–1939)