Some time ago a friend of mine got into a dispute with two civvy police officers. He was caught drink driving and tried to run away from the coppers. The coppers rugby tackled him to the floor and charged him. The Police have now said he assaulted them and the charge has gone through the chain in his unit. He had been sentenced in a civvy court, but now his CO has told him he'll be discharged for the offence. Can he do anything about this?