[chrispedersen]

A few ways to improve mammoth morale.

1. Add undead.
2. Berserk them. touch of madness for example.
3. add large numbers of slow units. Moral checks only occur
when a threashold level of serious wounds occurs.

So if you have 10 mammoths in a group of 50 units, the mammoths will continue to receive the survivors moral benefit; additionally a higher number of wounds will be necessary to cause the morale check to happen.