Yes, soldiers actually referred to French people as “Frog” because that was the army’s designation for them.

They were called grenouille?

Maybe. It said the translation in one of the pages of my history book, but I don’t have it on hand, and am to lazy to get it.

so the french were cannibals

We’ll, Americans would refer to French people as “Frogs” cause that was the AEF’s designation for the French