In the early 70s I lived in one big barracks room with about 50 guys in bunk beds. Then, one day they came in and built partitions between them! The modern army had arrived! No doors yet, but better than nothing. Pretty cushy compared to the guys who lived in the jungle, though.
I spent half the 90s in an ASOS. We’d go to the Grafenwoer Army Training Grounds for weeks at a time and live in open bay barracks. At least with my Air Force dorm room, during the late 80s, I had the public bathroom with the open shower room just down the hall. At Graf, you had a bit of a walk across the road to the crappers and showers.
During my most recent deployment, just last year, I shared a room with three other Senior NCOs. The showers were in the building. Each shower stall had two shower curtains so you had a small, private space to towell off/dress.
Most of us old guys weren’t bothered with privacy; we “grew up” without privacy at our first duty station. We stepped out of the shower, dried off and got dressed. The “open minded” youngsters who welcome homosexuals in the military hid behind their curtains.