The only thing the GSM ever did for me was when the squadron's boss used to do uniform inspections prior to parades etc and the "Ohhh you have a medal, you're on it"
Medals bar the long service gong were rarer than hen's teeth in the rest of the RAF, but at Odiham they were as common as muck, so once posted away from Odiham you became liable for any bloody parade.
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To keep Beagle 'appy