Broken bones sounds bad. Seriously.
I don't think getting through my service intact was ever in question. It was physically hard at times but I don't recall being subject to any sadism whatsoever. I did have a mild case of stress fracture in my shin in the first month.
The master sergeant was quite a character, indeed. He wasn't hated. He was thought of as somewhat strange but he wasn't bad.
We had a giant pot for making soup for the entire company when on camping out on exercises. Some guys from another platoon had tended the fire under the pot a bit too well and the thing melted from the bottom and was ruined. The guys got an earful and the master sergeant agonized over how to explain the incident to the major responsible for supply and maintenance of the garrison. That particular camp was fun. We had the opportunity to try different types of weapons including the legendary Suomi KP/-31 submachine gun, which had not been in service for many decades.
This weapon was instrumental in thwarting hundreds of infantry attacks by the Red Army in 1939/1940.