Term by which the royal air force was perhaps best known?
Just kidding :) the name was just the few.
The Royal Bank of Scotland (RBS) has the term 'Royal' because it was founded by Royal Charter in 1727. The use of the term Royal is restricted, and, would normally have to be bestowed by the monarch by Royal Charter (e.g. a number of towns are referred to as 'Royal Burghs', such as Kirkcaldy, even though the term was abolished in 1975).
The Air Force has Special Operations, "Special Forces" is the term for Army Green Berets. The Air Force special ops consist of: Pararescue Combat Controllers Special Ops Weather Team Or in Britain Royal Marines and RAF Regiment are the second closest to a Special Operations. the Royal Air Force have: RAF Regiment RAF Parachute Team. However Britain does have a Air Special Ops branch which is obviously the SAS (Special Air Service)