Initially formed as a bomber unit, it became a fighter squadron prior to the Second World War and was one of the most successful participants of the Battle of Britain.

It also had the distinction of being active during the war on two fronts at the same time, when the squadron was split up between Malta and the Dutch East Indies.

On the 1 January 2019, the Reserve Logistic Support Wing (RLSW) was established with 501, 504 and 605 LSS Squadron's moving from No.

605 Squadron was formed on 5 October 1926 at RAF Castle Bromwich as a day bomber unit of the Auxiliary Air Force, recruiting in the Birmingham area.

It then continued to operate from bases in the south, carrying out escort duties and fighter sweeps until posted overseas.

In November 1941, the squadron were embarked on the aircraft carrier HMS Argus and taken via Gibraltar to a launch point near enough to Malta that they would be able to fly the remaining distance.

Arriving in Singapore too late to prevent its capture, the squadron moved to Sumatra and then to Java, in the event caught up in the Japanese invasion.

605 squadron was formed at RAF Ford on 7 June 1942, equipped with Douglas Boston and Havocs in the intruder role.

[11][12] One of the squadron's Mosquitos FB.VI TA122 is now on permanent display at the de Havilland Aircraft Museum located in Hertfordshire.