[Sombre]

You can do it with a commander. See Ogre Kingdoms mod - Mawpit and Skrag the Slaughterer.

There's no mod command for it specifically. Setting morale to 99 doesn't work before someone suggests that. You have to find a workaround.

With troops, I can't think of a clean workaround. Possibly aoe 1 poison cloud + no poison res + berserk + second form without poison cloud.