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September 1, 1939- WWII Begins
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September 3, 1939 Great Britain and France declare war on Germany.
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September 17, 1939 The Soviet Union invades Poland from the east.
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September 27–29, 1939 Warsaw surrenders and russian government flees
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April 9, 1940–June 9, 1940 Germany invades Denmark and Norway.
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June 10, 1940 Italy enters the war.
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September 27, 1940 Germany, Italy, and Japan sign the Tripartite Pact.
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June 22, 1941–November 1941 Nazi Germany and its Axis partners (except Bulgaria) invade the Soviet Union.
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December 7, 1941 Japan bombs Pearl Harbor.
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December 8, 1941 The United States declares war on Japan
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December 11–13, 1941 Nazi Germany and its Axis partners declare war on the United States.
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June 1942 British and US navies halt the Japanese naval advance in the central Pacific at Midway.
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September 12, 1944 Finland concludes an armistice with the Soviet Union, leaving the Axis partnership.
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October 20, 1944 US troops land in the Philippines.
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December 16, 1944 The Germans launch a final offensive in the west, known as the Battle of the Bulge
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March 7, 1945 US troops cross the Rhine River at Remagen.
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April 16, 1945 The Soviets launch their final offensive, encircling Berlin.
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April 1945 Partisan units, led by Yugoslav Communist leader Josip Tito, capture Zagreb and topple the Ustasa regime
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April 30, 1945 Hitler commits suicide.
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May 7, 1945 Germany surrenders to the western Allies.
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May 9, 1945 Germany surrenders to the Soviets.
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May 1945 Allied troops conquer Okinawa, the last island stop before the Japanese islands.
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August 6, 1945 The United States drops an atomic bomb on Hiroshima.
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August 8, 1945 The Soviet Union declares war on Japan and invades Manchuria.
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August 9, 1945 The United States drops an atomic bomb on Nagasaki.
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Sep 2, 1945 - WWII ends