where to find some troops

[Ryastar]

Inquisitors tend not to show up anywhere else. Occasionally I've found them in the Dragon's labyrinth, almost at the end of the game. To get more you'll have to use sacrifice or the inquisitor skill (the latter is not recommended, cause it requires a lot of investment in skills that are, shall we say, less useful)

[Metathron]

Occasionaly, Furious Paladin will have them (Marshan Swamp).

I've also found them once in Western Isles, sold by the guy where you land.