Two WW2 era videos.
The first shows saliors life aboard the USS Saufley. My God there is little privacy. At 3.08 you can see the sailors taking care of business and one sailor desperate to stand next to that urinal. Nice sailor's tattoo too!
The second shows the physical for soldiers. And, yes, the applicants are totally nude for the entire time including during the psychological assessment. As the video says, 'here's where privacy ends' lol. Can't imagine that happening today. Obviously an era when men were men.
https://www.youtube.com/watch?app=desktop&v=V44dJ1p2Yfw