First of all, I'm aware that we are not allowed to make Warhammer themed mods in non-Warhammer total war games, I only want to port a single unit that fits with ancient/medieval warfare to a historical Total War game. Also, I do not intend to publish any mod, I just do this for testing and learning about the modding tools.

With that said, I would like to port a unit in Total War Warhammer 2 to a historical Total War game. As far as I know, I would have to export the model, skins, animation and skeleton. Am I missing anything? How do I do this? Would I need to modify these files, or can I directly import them to the historical Total War game?

I would be very grateful if anyone could help me with these issues and ideally link a guide on how to do this. I don't mind if the guide is about exporting units from Rome 2 to Attila, for example, as long as the steps to be followed are similar.