My ex-Boss, years ago as a commissioned ex-ranker Fg Offr of the Int.persuasion was fired across the Pond to talk to the cousins on a matter of mutual interest.
He was amazed at the VIP reception he had and was greatly impressed by the reverence in which he seemed to be held.
Finally at, a dinner in his honour the penny dropped , when he was introduced thus:
"Gentleman , may we raise our glasses to our distinguished guest :
" FLAG Officer D.... O...."