I'm wondering what you guys do when you are in battles. If I have ranged units, I will FF on weaker units. I'm not sure what to do with melee units. Do I want my entire melee force FF? Or should I have a couple FF, while the others just randomly fight? When should I attempt to assassinate their hero? How do you group your units? I'm trying to get my heroes at 1, my primary units as 2, my specialized units as 3 and buildings as 4.