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September 1939
Germany invades Poland, starting World War II. Britain and France declare war on Germany. -
April 1940
Germany invades Norway and Denmark -
May 1940
Germany invades Belgium and the Netherlands. -
June 1941
Germany invades the Soviet Union. -
December 1941
Japan bombs Pearl Harbor. The U.S. declares war on Japan -
June 1942
The tide turns — the Allies defeat Japan in the Battle of Midway. -
November 1943
U.S. forces invade Tarawa. -
June 1944
D-day: Allied troops land in France and begin invasion -
May 1945
Germany surrenders, ending World War II in Europe. -
August 1945
Atomic bombs dropped on Hiroshima and Nagasaki.