I know that the Barony of Makar has two special forces. One has a cavalry charge, so I guess they are special cavalry, and the other...ah, I forget. I think the Mystic Monks may have an artillery feature that does extra damage to fortifications, maybe.
One center I know about provides berserkers. Their damage output increases greatly as the battle progresses.
OK, well, can you
document these effects?
It's important to be able to isolate and verify the special abilities. Otherwise it's all just rumours and guesswork.
Also, it would be extremely useful to know just what,
precisely, their effects really are.