Yes the medieval crusader look would be best. Thats when they can be most compared to fantasy races.
I can already envision my lance-knights killing off the big creatures, the (sword)knights killing some footmen. The archers crippling of immidiately after while my knights make way for a second charge to be followed up by a big charge of my own footmen. Onward soldiers.
Maybe make a trailer of a battle involving something like that..depending on whats a possible tactic of course.