I'd say he's suffering PTSD as a result of some serious sexual assaults. They keep shoving their hands up his bum and then someone cut his bollocks off. That's going to make any soldier a bit miserable. Apart from the trangender ones, obviously.
I imagine that this will be pushed downline to suitable one star to deal with - saying that , due to the lack of happiness / joy / support / and etc., of ascending to final (?) step - will not produce any lustre to incumbents name.