The Franco-Polish Alliance was the
military alliance
A military alliance is a formal Alliance, agreement between nations that specifies mutual obligations regarding national security. In the event a nation is attacked, members of the alliance are often obligated to come to their defense regardless ...
between
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 Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...
and
France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...
that was active between the early 1920s and the outbreak of the
Second World War
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 initial agreements were signed in February 1921 and formally took effect in 1923. During the
interwar period
In the history of the 20th century, the interwar period, also known as the interbellum (), lasted from 11 November 1918 to 1 September 1939 (20 years, 9 months, 21 days) – from the end of World War I (WWI) to the beginning of World War II ( ...
the alliance with Poland was one of the cornerstones of
French foreign policy.
Background
During the
France-Habsburg rivalry, which began in the 16th century, France tried to find allies to the east of
Austria
Austria, formally the Republic of Austria, is a landlocked country in Central Europe, lying in the Eastern Alps. It is a federation of nine Federal states of Austria, states, of which the capital Vienna is the List of largest cities in Aust ...
, hoping to ally with Poland. Polish King
Jan III Sobieski also had the intention to ally with France against the threat of Austria, but the greater threat posed by the Muslim-led
Ottoman Empire
The Ottoman Empire (), also called the Turkish Empire, was an empire, imperial realm that controlled much of Southeast Europe, West Asia, and North Africa from the 14th to early 20th centuries; it also controlled parts of southeastern Centr ...
made him fight along with Austria for the Christian cause in the
Battle of Vienna
The Battle of Vienna took place at Kahlenberg Mountain near Vienna on 1683 after the city had been besieged by the Ottoman Empire for two months. The battle was fought by the Holy Roman Empire (led by the Habsburg monarchy) and the Polish–Li ...
. In the 18th century,
Poland was partitioned by
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 ...
,
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, ...
and
Austria
Austria, formally the Republic of Austria, is a landlocked country in Central Europe, lying in the Eastern Alps. It is a federation of nine Federal states of Austria, states, of which the capital Vienna is the List of largest cities in Aust ...
, but
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 ...
recreated the Polish state in the
Duchy of Warsaw
The Duchy of Warsaw (; ; ), also known as the Grand Duchy of Warsaw and Napoleonic Poland, was a First French Empire, French client state established by Napoleon Bonaparte in 1807, during the Napoleonic Wars. It initially comprised the ethnical ...
. With the rise of a united
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 ...
in the 19th century, France and Poland found a new common enemy.
Interwar period
During the
Polish–Soviet War
The Polish–Soviet War (14 February 1919 – 18 March 1921) was fought primarily between the Second Polish Republic and the Russian Soviet Federative Socialist Republic, following World War I and the Russian Revolution.
After the collapse ...
of 1920, France, one of the most active supporters of Poland, sent the
French Military Mission to Poland to aid the Polish army. In early February in Paris, three pacts were discussed by
Polish Chief of State Józef Piłsudski
Józef Klemens Piłsudski (; 5 December 1867 – 12 May 1935) was a Polish statesman who served as the Chief of State (Poland), Chief of State (1918–1922) and first Marshal of Poland (from 1920). In the aftermath of World War I, he beca ...
and
French President Alexandre Millerand: political, military and economic.
The political alliance was signed there on February 19, 1921 by
Polish Minister of Foreign Affairs Count
Eustachy Sapieha and
French Minister of Foreign Affairs Aristide Briand
Aristide Pierre Henri Briand (; 28 March 18627 March 1932) was a French statesman who served eleven terms as Prime Minister of France during the French Third Republic. He is mainly remembered for his focus on international issues and reconciliat ...
, in the background of the negotiations that ended the Polish–Soviet War by the
Treaty of Riga. The agreement assumed a common foreign policy, the promotion of bilateral economical contacts, the consultation of new pacts concerning Central and Eastern Europe and assistance in case one of the signatories became a victim of an "unprovoked" attack. As such, it was a
defensive alliance. The secret military pact was signed two days later, on February 21, 1921, and clarified that the agreement was aimed at possible threats from both
Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
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 ...
. An attack on Poland would make France keep lines of communication free and Germany in check but not require it to send troops or to declare war.
Both political and military pacts were legally not in force until the economic pact was ratified,
which occurred on August 2, 1923.
The alliance was further extended by the Franco–Polish Warrant Agreement, signed on October 16, 1925 in
Locarno
Locarno (; ; Ticinese dialect, Ticinese: ; formerly in ) is a southern Switzerland, Swiss List of towns in Switzerland, town and Municipalities of Switzerland, municipality in the district Locarno (district), Locarno (of which it is the capita ...
, as part of the
Locarno Treaties
The Locarno Treaties, known collectively as the Locarno Pact, were seven post-World War I agreements negotiated amongst Germany, France, Great Britain, Belgium, Italy, Second Polish Republic, Poland and First Czechoslovak Republic, Czechoslovak ...
. The new treaty subscribed all previously-signed Polish–French agreements to the system of mutual pacts of the
League of Nations
The League of Nations (LN or LoN; , SdN) was the first worldwide intergovernmental organisation whose principal mission was to maintain world peace. It was founded on 10 January 1920 by the Paris Peace Conference (1919–1920), Paris Peace ...
.
The alliance was closely tied with the Franco-Czechoslovakian Alliance. France's alliances with Poland and
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 ...
were aimed at deterring Germany from the use of force to achieve a revision of the postwar settlement and ensuring that German forces would be confronted with significant combined strength of its neighbours. Although Czechoslovakia had a significant economy and industry and Poland had a strong army, the French–Polish–Czechoslovakian triangle never reached its full potential. Czechoslovakian foreign policy, under
Edvard Beneš
Edvard Beneš (; 28 May 1884 – 3 September 1948) was a Czech politician and statesman who served as the president of Czechoslovakia from 1935 to 1938, and again from 1939 to 1948. During the first six years of his second stint, he led the Czec ...
, avoided signing a formal alliance with Poland, which would force Czechoslovakia to take sides in
Polish–German territorial disputes. Czechoslovakia's influence was weakened by the doubts of its allies as to the trustworthiness of its army, and Poland's influence was undermined by fighting between supporters and opponents of
Józef Piłsudski
Józef Klemens Piłsudski (; 5 December 1867 – 12 May 1935) was a Polish statesman who served as the Chief of State (Poland), Chief of State (1918–1922) and first Marshal of Poland (from 1920). In the aftermath of World War I, he beca ...
. France's reluctance to invest in its allies' industry (especially Poland's), improve trade relations by buying their agricultural products and share military expertise further weakened the alliance.
In the 1930s, the alliance remained mostly inactive and its only effect was to keep the
French Military Mission to Poland, which had worked with the Polish General Staff ever since the Polish–Soviet War of 1919–1920. However, with the German threat becoming increasingly visible in the latter part of the decade, both countries started to seek a new pact to guarantee the independence of all contracting parties and military co-operation in case of a
war with Germany.
1939
Finally, a new alliance started to be formed in 1939. The Kasprzycki–Gamelin Convention was signed May 19, 1939 in
Paris
Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
. It was named after
Polish Minister of War Affairs General
Tadeusz Kasprzycki and Commander of the
French Army
The French Army, officially known as the Land Army (, , ), is the principal Army, land warfare force of France, and the largest component of the French Armed Forces; it is responsible to the Government of France, alongside the French Navy, Fren ...
Maurice Gamelin
Maurice Gustave Gamelin (; 20 September 1872 – 18 April 1958) was a French general. He is remembered for his disastrous command (until 17 May 1940) of the French military during the Battle of France in World War II and his steadfast defence of ...
. The military convention was army-to-army, not state-to-state, and was not in force legally, as it was dependent on signing and
ratification
Ratification is a principal's legal confirmation of an act of its agent. In international law, ratification is the process by which a state declares its consent to be bound to a treaty. In the case of bilateral treaties, ratification is usuall ...
of the political convention.
It obliged both armies to provide help to each other in case of a war with Germany. In May, Gamelin promised a "bold relief offensive" within three weeks of a German attack.
The treaty was ratified by France on September 4, 1939, on the fourth day of
German offensive on Poland.
However, France provided only token help to Poland during the war in the form of the
Saar Offensive, which has often been considered an example of
Western betrayal. However, the political convention was the basis of the recreation of the
Polish Army in France.
Piotr Zychowicz quoted the memoirs of the
French ambassador to Poland,
Léon Noël, who wrote as early as October 1938, "It is of utmost importance that we remove from our obligations everything that would deprive French government the freedom of decision on the day when Poland finds itself in war with Germany". Foreign Minister
Georges Bonnet reassured Noel by writing that "our agreement with Poland is full of gaps, needed to keep our country away from war".
[pages 279-280]
See also
*
Anglo-Polish alliance
*
Cordon sanitaire
*
Diplomatic history of World War II
The diplomatic history of World War II includes the major foreign policies and interactions inside the opposing coalitions, the Allies of World War II and the Axis powers, between 1939 and 1945.
High-level diplomacy began as soon as the war start ...
*
Foreign alliances of France
*
International relations (1919–1939)
*
Phoney War
The Phoney War (; ; ) was an eight-month period at the outset of World War II during which there were virtually no Allied military land operations on the Western Front from roughly September 1939 to May 1940. World War II began on 3 Septembe ...
*
Polish Army in France (1939–40)
*
Western betrayal
*
Why Die for Danzig?
References
External links
Franco–Polish Treaties of 1921 and 1925h1>
Further reading
*
{{DEFAULTSORT:Franco-Polish Alliance (1921)
Treaties concluded in 1921
Treaties entered into force in 1921
Foreign relations of the Second Polish Republic
World War II treaties
France–Poland military relations
20th century in France
20th-century military alliances
Interwar-period treaties
Treaties of the French Third Republic
Treaties of the Second Polish Republic
Military alliances involving France
Military alliances involving Poland