Not unlikely that this guy was being sexually assaulted. There a case of some gay predators keeping a guy in the Chiefs mess for that purpose. It has become much more of a problem since they allowed gays in the military. It’s much worse with the females, but it happens with the males too.
When it was illegal to be gay in the military, any kind of advance would get the predator in a world of shit. Now the question becomes was the sex consensual and was the advance invited. A much more lenient environment for predators.
When I was at sea in ancient times, any guy who even thought about putting moves on us knew he was bound for Davy Jones’ Locker.