A flying squadron is an aircraft unit which carries out the primary tasks of the RAF. RAF squadrons are somewhat analogous to the regiments of the British Army in that they have histories and traditions going back to their formation, regardless of where they are based, which aircraft they are operating, etc. They can be awarded standards and battle honors for meritorious service. Whilst every squadron is different, most flying squadrons are commanded by a wing commander and, for a fast-jet squadron, have an establishment of around 100 personnel and 12 aircraft.
The term squadron can be used to refer to a sub-unit of an administrative wing or small RAF station, e.g. Air Traffic Control Squadron, Personnel Management Squadron etc. There are also Ground Support Squadrons, e.g. No 2 (Mechanical Transport) Squadron which is located at RAF Wittering. Administrative squadrons are normally commanded by a squadron leader.
A flight is a sub-division of a squadron. Flying squadrons are often divided into two flights, e.g. “A” and “B”, each under the command of a squadron leader. Administrative squadrons on a station are also divided into flights and these flights are commanded by a junior officer, often a flight lieutenant.
Because of their small size, there are several flying units formed as flights rather than squadrons. For example No. 1435 Flight is based at RAF Mount Pleasant in the Falkland Islands, maintaining air defense cover with four Eurofighter Typhoon aircraft.