Commissioned into RAF from army SNCO service. Full iot course. Complete waste of time apart from learning how to tie a bow tie. (SNCO's allowed elastic ones!)
Main reason for ex-rankers on course was to help the permanent staff teach the youngsters how to iron etc.
The first 6 week 'sense of humour test' was particularly familiar.
The whole course confirmed to me that, in any service, "bull**** baffles brains".