Slitherine

During Into the Trollwoods Mission you encounter a village with Troll-Killers. Is there an option to have them join my army?
I can only tell them that they behave like Trolls themselves which turn them hostile or than I'm on a diplomatic mission which gives my -1 Moral.

I'm a bit confused because at the beginning of the mission I was arguing with Alisa about the trolls that I see them as foes and against allying with them. So I would have expected that Falirson during that encounter with the Troll-Killers stay true to his previous words, share their hostility and join my campaign instead taking a complete u-turn.

If you help the trolls in Mission 2, you will not be able to have those guys join you. If you had helped the humans, you could have had that option

Oh, OK! I choosed on that mission my side and killed them both.