Claim: Nazi Germany conducted Operation Barbarossa in 1941.
Evidence: Following the German invasion of the Soviet Union in 1941 , the tide gradually turned against the Nazis , who suffered major military defeats in 1943.
Operation Barbarossa -LRB- German : Unternehmen Barbarossa -RRB- was the code name for Nazi Germany 's invasion of the Soviet Union during World War II , which was launched on Sunday 22 June 1941.