World War II was the most extensive and costly armed conflict in the history of the world, involving the great majority of the world's nations, being fought simultaneously in several major theaters, and costing approximately 50 million lives. The war was fought mainly between an alliance of the United States, the Soviet Union, China and Britain (known as the Allies), and the Axis Powers, an alliance between Germany, Italy and Japan. Most of the fighting occurred in the European theater in and around Europe, and in the Asian theater in the Pacific and East Asia.

Articles in category "World War II"