During World War II, it operated as a bomber squadron of the Royal Air Force.

[1][2] Originally formed as 1359 Flight RAF, it was attached to a Hercules OCU (Operational Conversion Unit, by this time the former No.

After the success of the trial, its role expanded over the years to provide aircrews to all air transport and air-to-air refuelling aircraft of the RAF.

On 1 October 2012, in recognition of its continued work with the main squadrons, the flight was authorised by the Standing Committee of the Royal Air Force to be rebadged as 622 (Reserve Aircrew) Squadron.

According to its website, the mission statement is as follows: To provide aircrews to the Air Transport and Air-to-Air Refuelling Forces either on call-out in times of crisis and war, or to provide peacetime support to maintain the operational capability of the RAF multi-engine squadrons[7]