How does morale 50 work when mixed with other units? Can I throw some undead or mindless creatures in a squad with extremely low morale guys to bring it way up?
Nope, apparently not. It doesn't take account of them in working out the average.
I don't know what happens if the unit runs away. Presumably the morale 50 ones carry on fighting? So effectively it's like two independent units, the morale 50 creatures in one and everyone else in the other.