World War II

The Second World War was a global conflict lasting from 1939 to 1945 fought between the Allied Powers (Britain, the United States, the Republic of China and the U.S.S.R.) and the Axis Powers (Germany, Italy, and Japan). It ended with the Allies victorious.

World War II, in the Greek world, is described to be a huge fight between the children of @Zeus and @Poseidon on one side and the children of @Hades on the other.

The events of World War II resulted in the pact of the Big Three, because their children were affecting the course of history too much. It was decided more demigod children would be dangerous for the mortal world.

@Frederick Chase is also very knowledgeable on the subject, being a military professor.