An heretical question I know, but what is the QCS actually for? I am not aware of the RN or RM having such a formation, nor the Army, so why does the RAF have this highly drilled group of airmen? Or is it just for the 400 drill movements without a word of command routine.
Please don't tell me it is for guarding the Queen's colour as most formations have a Queen's colour but not the equivalent of QCS.