I can say one thing for sure with 17 years + in the military. Men do not shower or bunk with women. The reason is obvious, you do not share that kind of personal space with someone you can be sexually attracted and related to. That is why gays should not be allowed openly, unless you want to make arrangements for four separate kinds of bunks and shower facilities. Simple as that. Sounds rather disruptive to cohesion if you ask me.
I can imagine women who do not know me would want to take a shower with me, and I would be similarly uncomfortable pressed into the same situation.
That is why gays should not be allowed openly, unless you want to make arrangements for four separate kinds of bunks and shower facilities. That won't help. Gay men are attracted to other gay men. So you can't put them together in a bunk. You have to isolate them from all other men.
But you can't put them with women, because the women are attracted to them. Also, men might lie to get to bunk with the woman, or a "gay" man might in fact be bisexual.
There is no way to appropriately segregate gays and lesbians -- they are simply unnatural, and don't fit into the normal societal structures.
As I always say: You can't have a "gay boy scouts", because you might as well be putting guys and girls together in tents for the night.