The name Hells Angels was coined by a squadron of World War I fighter pilots.
(The Hells Angels Motorcycle Club (HAMC) was formed in 1948 in Fontana, California, the name "Hells Angels" was inspired by the name of the U.S. Air Force 303rd Bombardment Groups in the early years of World War II. In the UK the Hells Angels London chapter credits their founding on the Beatles. Allegedly the Beatles invited a couple of members of the HAMC San Francisco, to London, following which it was decided to create English charters of the club.)