World War 2 By ajschutz Sep 1, 1939 Hitler Invades Poland May 10, 1940 Churchill becomes Prime Minister of Britain Jun 22, 1941 Invasion of Russia by Germany Called Operation Barbarossa Dec 7, 1941 Japan attacks Pearl Habor The Attack on Pearl Harbor Dec 14, 1941 America enters the War Apr 30, 1945 Hitler Kills himself Aug 6, 1945 Bombing of Hiroshima Aug 9, 1945 Bombing of Nagasaki 90,000–166,000 people in Hiroshima and 60,000–80,000 in Nagasak