Yeah the Elephants are a bit overpowered. I remember watching something on TV about ancient war tactics. Can’t remember who it was but they found that by hitting the Elephant in the trunk it would bring down the beast. It was quite effective from what the people were talking about.

As for the game rules, I think we need to know what it’s based on. Is your class using Total War as it’s base for the rules or some table top game as mentioned above