World War II (WWII or WW2), also known as the Second World War, was a global war that lasted from 1939 to 1945. It involved the vast majority of the world's nations—including all of the great powers—eventually forming two opposing military alliances:
- the Allies, lead by Britain, China, France, the Soviet Union, and the United States.
- the Axis, lead by Germany, Italy, and Japan
It was the most widespread war in history, and directly involved more than 100 million people from over 30 countries.
- During the 1943 Allied invasion of Italy the painting the Apotheosis of Saint Fidgeta was hidden (Saint Fidgeta and Other Parodies; 20).