i don't know if this has been brought up before, but ive noticed that units in detachments can escape encirclements by going into the hq reserve. assuming of course the HQ isnt also encircled.
would it be possible to prevent this. its not a big issue vs AI, as long as i can resist the temptation to cheat. but it might be an issue in MP games, which i hope to participate in one day soon.