history.

Fascism in Europe, and Japanese Imperial militarism in the Pacific.

Quite a lot of the troops were fighting France, Poland, the British Empire, the United States and the Soviet Union, weren't they?

I didn't suggest the answer was comprehensive. The question was vague enough that that response is more than adequate. I could just as well have responded "Each other."

Quite.


Joe(and some were fighting their fears)Nation

this is why it called world war II there thousands of troops. What country do you mean?

Almost all wars in history worthy of the name involved thousands of troops. It was called a world war because it involved military operations right around the globe. The term is not referential to the numbers of troops who were involved--but that happens to have numbered in the tens of millions.