The RAF was formed on 1st April 1918 (Yep...No April fools Joke) by the amalgamation of the royal flying corp (Army air corp) and the Naval air service.
It is the youngest and by far the most civillised armed service, commonly called the 'gentlemans armed service' as apposed to the army and navy where the conscrips of criminals and vagabonds were commonly 'called' upon to fill the ranks.
Royal Air Force Air Cadets was created in 1941.
Royal Malaysian Air Force was created in 1958.
Royal Brunei Air Force was created in 1991.
Royal Norwegian Air Force was created in 1944.
Royal Air Force Memorial was created in 1923.
Royal Danish Air Force was created in 1950.
Royal Air Force Commandos was created in 1940.
Royal Air Force of Oman was created in 1959.
Royal Bahraini Air Force was created in 1977.
Royal Air Force Germany was created in 1959.
Royal Cambodian Air Force was created in 1953.
Royal Netherlands Air Force was created in 1913.