Early '90's, I had an SAC in my flight called Colin Andrews (I've changed the surname but not the first name). He was universally known as Col.
Now Col was a slightly out of the ordinary SAC. For a start, he was in his early 30's and, although he looked like a sack of spanners in uniform, his civvie dress was always immaculate. Blazer, flannels, military tie etc.
It came to pass that Col was selected for a 4 month tour in the Falklands. So come the day, Col presents himself (immaculate in MUFTI) at Brize for onward transportation to all points South.
As it happened, also travelling South that evening was the roulemont for the Resident Infantry Unit. The DAMO had been informed that the CO of the pongoes was turning up at Brize to see off his guys. The CO was a Colonel Andrews.
Enter SAC Colin Andrews with his carry-on briefcase marked 'Col Andrews'.
I think you can guess the rest.
To give Col his dues, he managed to bluff his way through a considerable quantity of G and T in the VIP lounge before being rumbled.