Civilian contractors do not go to Army Basic Training, only military enlistees. His discharge does not mean he actively did anything bad. I have not seen if his discharge was under general or dishonorable. If less than 180 days he is probably not qualified to have benefits or veteran status in most but not all states. The discharge for medical can include anything preexisting, even shin splints, minor heart defects or ADD. We simply do not nor likely will not know about the discharge unless it is brought up in court.