Yeah if you are playing the Turks you will need to take out the byzantines ASAP. If you are lucky they will give up Costantinople without a fight. You dont want to let them build up. I have watched those jedi Byzantine generals take apart even Janissary Heavy Infantry with relative ease. Once I had an 8 star byzantine general with ridiculous bonuses to valour (killer instinct, Brave beyond Belief, and the one that comes from too many failed assassination attempts) defeat a unit of my JHI in a forest. Just a head on charge, nothing special. Very deadly.