I am reminded of a situation on basic training years ago (when I was a young single guy full of hormones). We were in a mixed platoon, but it was still in the days of separate standards (e.g. women were allowed lighter packs and were still prohibited in certain occupations). We had just come to the end of a night move and we were exhausted. It was also a moonless night, so it was pitch black in the Borden training area. While trying to get something sorted, I switched on a flashlight and got an eyefull of a young lady in my platoon who was changing her shirt. I said, "sorry!" She said, "don't worry about it. It's nothing you've never seen before," (albeit not that particular pair). "OK" I said, and we both went to ground (in separate hooches) as soon as we could.
Notwithstanding some films, there's nothing sexy or erotic about sexual relations in an army field scenario, especially if you haven't bathed recently and there are mosquitos and poison ivy everywhere.