The Eastern Front of World War II was a theatre of conflict between the European Axis powers and co-belligerent Finland against the Soviet Union (USSR), Poland and other Allies, which encompassed Central Europe, Eastern Europe, Northeast Europe (Baltics), and Southeast Europe (Balkans) from 22 June 1941 to 9 May 1945. It has been known as the Great Patriotic War in the former Soviet Union and modern Russia, while in Germany it was called the Eastern Front or the German-Soviet War by outside parties.