Yes, a lot specially after a PT session. They'd tell us to be ready in 10 minutes so everyone rushed to the showers. When more than 100 guys try to shower at the same time, of course you got the awkward dick bumping, and some shy glances. But everyone was cool about it.
After basic, we all had to live in the barracks, and, as time went on, everyone got more comfortable and, in the end, there were even some intentional playful dick grabs. I miss those days.