Various Cheats:
During battle hold down the CTRL key and type in the following codes

EYEOFTERROR - See all enemy units
CLEANSINGFIRE - Hit Probablity 100%
HERETIC - Finish mission
WHITEDWARF - Units immune to ranged weapons but NOT close combat

Get Paladins:
In the detachment select screen hold CTRL and type in PALADIN to get Knight Paladins