Crossing over from the apocryphal stories thread....
There is the tale of a newly graduated RAF Regiment acting pilot officer who went to Buckingham Palace as part of QCS when they were given the honour of mounting guard for a couple of weeks. Being off duty one evening, the said officer was invited to dine with the "Family". Knowing nothing of horses and corgis, the conversation passed over his head as he sat there looking miserable. Prince Philip decided to break the ice:
"Tell me young man. The army regiments all seem to arrive with mess dress in several colours and styles and yet you RAF chaps always seem to wear the same thing."
"Well Sir", the Rock triumphantly replied as he at last knew something that he could contribute. " I am wearing No 5B Mess Dress which has a black bow tie, a soft white golf-ball shirt, and a blue waistcoat. We also have 5A dress which was a white waistcoat and a stiff wing collar, but we only wear that on special occasions".