What Did They Call World War I Back Then?

Obviously, they wouldn't know there would be a World War II.  So what would they call it.

I've seen the name "Great War" used on many occasions.  I've also seen it called "The War to End All Wars,"  but that is a bit too long of a name.

Doing research, this war that went from 1914 to 1918, is usually referred to as World War I in the United States.  Britain tends to refer to it as the First World War.

I'll do some more research on it.

--The Really Big and Nasty War.  --Cooter