There's a code of conduct. No fraternization, especially no fraternization with civilians. Absolutely no drinking.

[ And of course it's obvious enough by his tone if not from context that those codes of conduct were broken all over the damn place. ]

Military's where it happens for plenty of people, anyway. Living together in close quarters. Lots of talk about brotherhood and depending very, very heavily on the man next to you. Do they say the same thing about the navy boys in your world as they do in mine?