World War II was fought between the Axis Powers (Germany, Italy, Japan) and the Allied Powers (Britain, United States, Soviet Union, France). Most of the countries in the world were involved in some way. It was the deadliest war in all of human history with around 70 million people killed.
When was it?
World War II started in 1939 when Germany invaded Poland. Great Britain and France responded by declaring war on Germany. The war in Europe ended with Germany's surrender on May 7, 1945. The war in the Pacific ended when Japan surrendered on September 2, 1945.
Where was it?
World War II started in Europe, but spread throughout the world. Much of the fighting took place in Europe and in Southeast Asia (Pacific).
Check out these pages to learn about the events, battles, and people of World War II: