A well known and RL historical example of this type of thing are the Saxons. Upon the death of King Harold II at Hastings, the Fyrdsmen ((levies and fodder)) fled like screaming rabbits. But the Housecarls ((UBER HEAVY pros)) encircled the king's corpse and fought until they all died. If we could get the EB thing to do this it would be awesome. Maye a system where if the general dies his bodyguard enrages and will never retreat from the battle or something.
Just a thought.