The German-Soviet War was a major conflict during World War II, beginning on June 22, 1941, when Nazi Germany invaded the Soviet Union. This invasion was part of Operation Barbarossa, aiming to conquer Soviet territory and eliminate communism. The war saw some of the largest battles in history, including the Battle of Stalingrad and the Siege of Leningrad. The conflict lasted until May 1945, resulting in significant casualties on both sides. The Soviet Red Army ultimately pushed back the German forces, leading to the capture of Berlin and the end of the war in Europe. The war had profound effects on the post-war landscape and the Cold War dynamics.