WWII By CrimsonGamer Sep 1, 1939 Germany invades Poland. World War II begins. Period: Sep 1, 1939 to Sep 2, 1945 WWII Sep 3, 1939 France and Great Britain declare war on Germany. May 30, 1940 Winston Churchill becomes leader of the British government. Jun 10, 1940 Italy enters the war as a member of the Axis powers. Sep 22, 1940 Germany, Italy, and Japan create the Axis Alliance. Dec 8, 1941 The US enters World War II on the side of the Allies. Jun 4, 1942 The US Navy defeats the Japanese navy at the Battle of Midway. Sep 3, 1943 Italy surrenders to the Allies. Aug 25, 1944 Paris is liberated from German control. Dec 16, 1944 The Germans launch a large attack in the Battle of the Bulge, but they lose to the Allies. Apr 12, 1945 US President Franklin Roosevelt dies. Apr 30, 1945 Adolf Hitler commits suicide as he knows Germany has lost the war. May 7, 1945 Germany surrenders to the Allies. Aug 6, 1945 The United States drops the Atomic Bomb on Hiroshima, Japan. Sep 2, 1945 Japan surrenders to the Allies ending the war.