Quote Originally Posted by Puzz3D
I got the infantry unit sizes in the battle of Trebia up to 120 men by editing dpack_0.pak with a hex editor, but they wouldn't go over that, and I did change the unit size in preferences.txt to 200.
Note that the demo code doesn't support unit sizes above 250 men in total, so if you hack the .pak files to go above that it may crash the game in odd places, although the .pak parser may still accept the new values.