Zilch
This...is...Caketown!
Mad dad was an Army cryptographer during the Korean War. He said back then you had what they called "professional privates". These were guys who loved the Army but didn't want any rank or the responsibility that came with it, so that when ever they'd get a promotion they'd do something on purpose to get busted back down. He also said that 9 time out of 10 these were the guys that you'd want to be next to when rounds started flying.
Sounds like what I remember of him.