Sgt. pilots.....
....the first crew I joined in Ballykelly in 1965 had a Sgt co-pilot. It was heavily hinted that he should be commissioned - he declined. It was then suggested that he might not be allowed to remain flying. He opted to leave and went to BOAC/BEA not sure which.
Slightly before that time a Sgt pilot on a Shack course ahead of me was sent away for a w/e and came back as a Flying Officer - yes, it really was that quick!
When I was doing my flying training at Topcliffe there were F/S pilots, Master Pilots and Master Navs. I learned a lot from them.
The Ancient Mariner