Where can I find information on different kinds of troops during WW1?

I want to suggest some new troops but I don't know where exactly to look for a list of different troops like since the Rhodoks are Italy I would like for Italian troops and it would give me a list with names and different purposes + weaponry. I looked many at many different websites and they are irrelevant.

You are looking wrong info. Search period between wars (how was it called), because its centered around that.

It's called interwar

thanks, forgot it.