World War II By snaito94 Aug 23, 1939 Nazis and Italy signed Pact Sep 1, 1939 Nazis invade Poland Sep 3, 1939 Britain, France, Australia and New Zealand declare war on Germany Sep 17, 1939 Soviets invade Poland Dec 14, 1939 Soviet Union expelled from the League of Nations Jun 14, 1940 Germans enter Paris Jun 22, 1940 France signs an armistice with Nazi Germany Aug 23, 1940 First German air raids on Central London Sep 27, 1940 Tripartite (Axis) Pact signed by Germany, Italy and Japan Jun 22, 1941 Germany attacks Soviet Union Jul 19, 1941 Allies bomb Rome Dec 8, 1941 United States and Britain declare war on Japan Aug 17, 1942 First all-American air attack in Europe Sep 13, 1942 Battle of Stalingrad begins Nov 8, 1942 Operation Torch begins (U.S. invasion of North Africa) Dec 31, 1942 Battle of the Barents Sea between German and British ships Feb 18, 1943 Nazis arrest White Rose resistance leaders in Munich Mar 2, 1943 Germans begin a withdrawal from Tunisia, Africa Jul 24, 1943 British bombing raid on Hamburg Nov 28, 1943 Roosevelt, Churchill, Stalin meet at Teheran Jun 5, 1944 Allies enter Rome Jul 20, 1944 Assassination attempt by German Army officers against Hitler fails Feb 4, 1945 Roosevelt, Churchill, Stalin meet at Yalta Aug 6, 1945 First atomic bomb dropped, on Hiroshima, Japan Aug 8, 1945 Second atomic bomb dropped, on Nagasaki, Japan Aug 15, 1945 Japan agree surrendar