524 Squadron was formed at RAF Oban, Argyll and Bute in Scotland on 20 October 1943 to operate the Martin PBM Mariner flying boat.

[1][4] The squadron was reformed at RAF Davidstow Moor on 7 April 1944 to operate the Vickers Wellington.

[4][5][6] The squadron carried out night operations of the French coast in preparation for D-Day, mainly attacking E-boats and submarines but also other shipping.

After the Normandy Invasion the squadron moved to the east of England to RAF Docking in a similar role along the Dutch coast.

[7] With the end of the war approaching the squadron was disbanded on either 25 May 1945[5][6] or on 25 June 1945 at RAF Langham,[1][4] the appointment of S/Ldr.