A Quick Guide to Combat Damage

[Satan]

so your formula would be:
casualty = (number of attackers * attack bonus modifier * (unit base attack + (hero attack * .0025) + (base attack * Miliary Tradition * .05)) / (mod life + mod defence)?

attacker:
hero attack 119
MT 10
IW 10
Med 10
100k warriors

defender:
hero attack 42 (hero was captured)
lvl10 hill, so theoretically tech should be 10
33670 warriors

fight lasted 1 round


your formula: 8619 attacker casualties
other formula: 9966 attacker casualties
real attacker casualties: 10246


i've yet to find a formula that can get exact results with real data

No, that's not it. Read it again, and think before you say it's wrong.

It's number of attackers*total attack- Defense = how much damage you will do. But remember that this doesn't include range.