World War II (WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945, although related conflicts began earlier. It involved the vast majority of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis. It was the most widespread war in history, and directly involved more than 100 million people from over 30 countries.It ran from 1 September 1939 –2 September 1945(6 years and 1 day)
on the allied side there were :
Military dead:
Over 16,000,000
Civilian dead:
Over 45,000,000
Total dead:Military dead:
Over 8,000,000
Civilian dead:
Over 4,000,000
Total dead:
Over 12,000,000 (1937–45)
Main Allied leaders
 Joseph Stalin Franklin Roosevelt Winston Churchill Chiang Kai-shek
Main Axis leaders
 Adolf Hitler
 Hirohito
 Benito Mussolini

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