......following on from Rigga's comment about late night eating.
late 60's, as duty NCO at Marham you could get invited by the RAF police to join them after midnight for a cooked meal in the airmens mess, they had a key (well maybe a screwdriver, crittall windows were always easy to open!).
As for army cooks, they were the best with field kitchens, when going up the Asahan ranges we would beg for army cooks, we ate so much better up there with them in charge.