Freeing squad members from slavery

A squad member was captured and is now a slave.

I went to the slave traders at the stone camp he was in, but none of them had any slaves for sale. I tried going in there at night and breaking him free, but the guards somehow knew straight away and came to lock him up again. I don't have the manpower to destroy the whole camp. What are my options?

Solution 1:

While my character was a slave, a group of rebels attacked my group of guards while we were moving between areas. I used that opportunity to escape.

You can try luring a mob into the guards while they are moving between areas, and free your squadmate while the guards are occupied (you will have to undo the shackles and run away fast, as combat doesn't last that long)

While waiting for an opportunity, have your squadmate lockpick his cage every time he is in it. If his escape is not successful, they'll just put him back, otherwise, hey, he's free! (But he's still on the run so avoid soldiers)

However, it is possible for him to die while escaping if the guards do too much damage.

I will keep updating this answer with tricks I find.