The Left-hand Spanker

Even better, is to secure the first entrance, then take out the enemy wandering around the compound. Don't progress to the next tower just yet. Send your other squad round the outside of the building to the other main entrance. Position them so they can take out anything through the fence and coming through the door of the tower, toss a couple of grenades to attract the right amount of attention - this should draw all the enemy away from the POWs leaving your other team to wade in and rescue the POW's!