615 squadron was formed at RAF Kenley as part of the Auxiliary Air Force on 1 June 1937 and was initially equipped with the Hawker Audax in the army-cooperation role.

[2] The squadron re-equipped with Gloster Gladiators in May 1939, taking them to France as part of the Air Component of the British Expeditionary Force in November 1939.

Pilot conversion to the Hawker Hurricane took place in the early months of 1940, with the aircraft themselves finally arriving in May 1940 as the German invasion of France got under way.

The next couple of weeks were marked by chaos and constant shuffling between bases that included Vitry-en-Artois, Saint-Inglevert, Poix, Abbeville & Moorsele (Belgium).

On 20 May 1940 whilst some ground crew & equipment were already making their way towards evacuation via Boulogne, patrols were still being carried out, with an He-111 shot down by PO Petrus Hugo.

Finally the last nine serviceable Hurricanes flew home to RAF Kenley, whilst non-flying crew returned to England in the steamer Biarritz from Boulogne, arriving at Dover on 21 May 1940.

Air support was not required, however, following the surrender of Japan and the squadron disbanded on 25 September at RAF Vizagapatam, Andhra Pradesh.