While Poland did not exist as an independent state during World War I, its geographical position between the fighting powers meant that much fighting...

During World War I, the German Empire was one of the Central Powers. It began participation in the conflict after the declaration of war against Serbia...

Poland and Great Britain During World War II: The Report of the Anglo-Polish Historical Committee, Vol. 1 (review)". The Journal of Military History....

The United Kingdom was a leading Allied Power during the First World War of 1914–1918. They fought against the Central Powers, mainly Germany. The armed...

Germany and the Soviet Union to the end of World War II. Following the German–Soviet non-aggression pact, Poland was invaded by Nazi Germany on 1 September...

see Diplomatic history of World War I. Below is a table showing the outbreaks of wars between nations which occurred during World War I. Indicated are...

Technology during World War I (1914–1918) reflected a trend toward industrialism and the application of mass-production methods to weapons and to the technology...

World War I began when Austria-Hungary invaded Serbia in July 1914, following the Assassination of Archduke Franz Ferdinand by Gavrilo Princip. Austria-Hungary...

During World War II in Poland, education often took place underground. Secretly conducted education prepared scholars and workers for the postwar reconstruction...

The Kingdom of Bulgaria participated in World War I on the side of the Central Powers from 14 October 1915, when the country declared war on Serbia, until...

German camps in occupied Poland during World War II were built by the Nazis between 1939 and 1945 throughout the territory of the Polish Republic, both...

outbreak of World War I, Ukraine was not an independent political entity or state. The majority of the territory that makes up the modern country of Ukraine...

During World War I (1914–1918), Brazil initially adopted a neutral position, in accordance with the Hague Convention, as an attempt to maintain markets...

This is a timeline of declarations of war during World War II. A declaration of war is a formal act by which one nation goes to war against another. The...

The history of Canada during World War II begins with the German invasion of Poland on 1 September 1939. While the Canadian Armed Forces were eventually...

to an unprecedented degree. All of the powers used lessons from their experiences on the home front during World War I. Their success in mobilizing economic...

Empire was one of the Central Powers of World War I, allied with the German Empire, Austria-Hungary, and Bulgaria. It entered the war on 29 October 1914...

Front or Eastern Theater of World War I (German: Ostfront; Romanian: Frontul de răsărit;), for Russia Second Patriotic War (Russian: Вторая Отечественная...

Christianity, created a kingdom of Poland in 1025 and integrated Poland into the prevailing culture of Europe. Mieszko's son Bolesław I the Brave established a...

Thailand officially adopted a neutral position during World War II until the five hour-long Japanese invasion of Thailand on 8 December 1941, which led to...

diplomatic history of World War I covers the non-military interactions among the major players during World War I. For the domestic histories of participants...

citizens perished during World War II: about one fifth of the entire pre-war population of Poland. Most of them were civilian victims of the war crimes and the...

and expulsion of Germans from Poland was the largest of a series of flights and expulsions of Germans in Europe during and after World War II. The German...

The military history of the United Kingdom in World War II covers the Second World War against the Axis powers, starting on 3 September 1939 with the...

place in North Africa during World War I (1914–1918) between the Central Powers and the Entente and its allies. The Senussi of Libya sided with the Ottoman...

culture during World War II was suppressed by the occupying powers of Nazi Germany and the Soviet Union, both of whom were hostile to Poland's people and...

The participation of Italy in the Second World War was characterized by a complex framework of ideology, politics, and diplomacy, while its military actions...

during the invasion of Poland, along with auxiliary battalions during the subsequent occupation of Poland in World War II, included the genocide of millions...

In Poland, the resistance movement during World War II was led by the Home Army. The Polish resistance is notable among others for disrupting German supply...

During World War I (1914–1918), belligerents from both the Allied Powers and Central Powers violated international criminal law, committing numerous war...