On 21 June 1941, the Central Landing Establishment was formed at Ringway airfield near Manchester; although tasked primarily with training parachute troops, it was also directed to investigate the possibilities of using gliders to transport troops into battle. It had been decided that the Royal Air Force and the Army would co-operate in forming the airborne establishment. Squadron Leader Louis Strange and Major J.F. Rock were tasked with gathering together potential glider pilots and forming a glider unit; this was achieved by searching for members of the armed forces who had pre-war experience of flying gliders, or were interested in learning to do so.