World War II By EthanCampbell Sep 1, 1939 Hitler Invades Poland Jan 1, 1940 British victory in Battle of Britain forces Hitler to postpone invasion plans Feb 14, 1941 Hitler begins Operation Barbarossa - the invasion of Russia. Feb 15, 1941 Japan attacks Pearl Harbor, and the US enters the war. Feb 1, 1942 Singapore falls to the Japanese in February - around 25,000 prisoners taken Jan 1, 1943 Italy surrenders, but Germany takes over the battle Jan 1, 1944 D Day: The Allied invasion of France, Paris is liberated in August May 7, 1945 Russians reach Berlin: Hitler commits suicide and Germany surrenders on 7 May Aug 14, 1945 After atomic bombs are dropped on Hiroshima and Nagasaki, Japan surrendered