Try being in the RN, on an Army station and walking past a member of the RAF!
Well it can be just as trying the other way round, CC! Years, no decades, no half a century, ago I ended up on a CCF camp at Culdrose. There were two of us from an RAF section, all the rest were Navy CCF. Drill consisted of a lot of preparing to remove headdress, removing headdress and replacing headdress. Easy-peasy with a Naval cap, tiresome (well for the DI) with a beret, especially as we knew no such drill. The rest of the stay was equally disconcerting, with various Tannoys for Up Spirits, Down Pipes or whatever. The weirdest thing though was that off duty you were not allowed to leave camp except in groups of half a dozen, or perhaps it was even more. Something about manning a whaler?*@! Would that still apply if you wished to leave Tescos?