WW2 By GMylott Period: 1939 to 1945 European Battles 1940 Hitler attacks Western Europe France is defeated and only last a few weeks longer than Poland 1940 Operation Sea Lion Hitler launches an all out assault on Britain 1941 Land Lease Act Congress approved the land lease act 1941 Germany retreats from the Soviet Union Jun 22, 1941 Non aggression pact broken Germany invades the Soviet Union Jun 6, 1944 D-Day The allies big assault on Normandy