Making groups hostile to player faction

[RommelFuchs 10]

Hi,

I'm making a MP mission where my main goal is to randomize several stuff. As part of that, there will be some villages occupied by Takistani guerrilas which will be friends or hostile towards the players' faction (West) at random. I already know how to randomize the thing.

I do know how to make a whole faction hostile to another using the setFriend command or how to make a single soldier hostile by grouping him to an invisible enemy officer. But I'm out of ideas on how to achieve what I'm trying to make.

My idea is to create a trigger on the village area and run the script for every guerrila present. But what could be a simple and generic way to make several guerrilas group hostile to West without making the whole faction hostile?