Inevitable for some at the end of the day. If we consider once a battalion has conducted say five or six tours of Helmand and they have around 80 casualties spread throughout those tours, what would you have the Bn do? 80 downgraded blokes in a Bn will destroy a Battalions operational effectiveness. Better to move them into jobs which are non operational outside of the Bn. A few can be kept but impossible to keep them all.