I must admit I was quite impressed by a young lad on my basic Airmans course at RAF Swinderby back in the very early 80's. After just two weeks he decided he was so homesick, being so far away from his family etc, that he decided to voluntarily chop himself from the course and go home.................
....to Swinderby Village!
Mind you he was positively dangerous attempting to do drill with a dummy SLR, never mind being let loose with a real 'bang stick'.
Peter