Need help fast! (Quick Question)

[Martok]

It sounds like you're the defender, yes? If that's so, then park your Katanks on a hill as far away from the Byz as possible--this will force them to tire themselves out marching all that way to engage your forces. Then when they're marching up the hill towards your position, just charge them when they're about halfway up the slope. Also, if it's in any way possible, try to hit them on one of their flanks to make them take a morale hit. Given that on Expert the AI gets an extra +4 morale bonus, anything you can do to sap the enemy's will to fight could very well be the key to victory.