Undead Warrior no losses?

[Kathos]

Originally Posted by DGDobrev

Sure you can You can also sacrifice the Cursed Ghosts, as both of them recover their lost troops when attacking. However, you never know when a unit will get above its max leadership and if it goes out of control, it can do more damage to you than the enemy So you're right that it's risky. Still, it is easily settled by a quick "heal" to remove that extra unit or two.

I've often thought about trying an undead hero in KBTL but I just never got around to it, and I was really hoping to try it in AP perhaps. Maybe not right away with no losses but we'll see as I only like to play games on the hardest difficulty =)
However regarding your post, are you saying that life draining units (cursed ghosts, ancient vampires) can create new units above your leadership? I always thought they would just heal back up to however many you came into the battle with, like in the HOMM games (minus the rigged ghosts in HOMM2, peasant feast!)