No. 684 Squadron RAF

The squadron was formed on 29 September 1943 at RAF Dum Dum near Calcutta, (then) British India, from the twin-engined[3] elements of No.

[2] It operated in the photo-reconnaissance role, first with the de Havilland Mosquito and the North American Mitchell, and later also with the Bristol Beaufighter and the Supermarine Spitfire.

The squadron performed long-range photo-reconnaissance in support of the Burma Campaign.

Near the end of the war, the squadron also performed high-speed courier flights.

It was disbanded on 1 September 1946 at RAF Seletar, Singapore, by being renumbered to No.