In the ending comment, "And remember, many guys had just tumbled out of the sack," I was attempting to imply there were occasionally various degrees of morning wood sported, but didn't want to make it too pervy.
I had a few experiences along those lines. However, my morning hard-ons mostly went down by the time I hit the head. On the other hand, we typically slept in "cubicles" with two opposing, stacked bunks. My mates in the adjoining bunks often received a view of my morning wood while I clambered out of the sack and changed underwear. And vice versa.