RAF West Malling over the Channel. The three surviving aircraft were rescued only when the fight was joined by Hurricanes from No. 111 Squadron. The remainder of the unit returned north to RAF Prestwick on 25 July due to the ineffectiveness of the Defiant against single-seat fighters. No. 29 Squadron flying Bristol Beaufighters arrived for its first tour of duty on 27 April 1941. One of the Squadron's pilots, Guy Gibson VC, later officer commanding 617 Squadron on the Dambusters Raid, said of the station "Of all the airfields in Great Britain ... we have the most pleasant". A regular and long-standing inhabitant,
Kilroy was here from a diagram of how to approximate a square wave using sine waves, also at RAF Yatesbury and with an instructor named Chadwick. This version was initially called Domie or Doomie, and "Life" noted that Doomie was used by the RAF. REME claimed that the name came from their training school, nicknamed "Chad's Temple"; the RAF claimed that it arose from Chadwick House at a Lancashire radio school; and the Desert Rats claimed that it came from an officer in El Alamein. It is unclear how Chad gained widespread popularity or became conflated with Kilroy. It was, however, widely in