No. 681 was formed out of No. 3 PRU, at Dum Dum in January 1943. It provided vital photo reconnaissance capability for the South-East Asia Command. Initially it was equipped with very outdated Hurricanes PR Mk. II (fighter converted to PR role) and Spitfires PR.Mk.IV. There was also a Dutch element in 'C' flight that operated North American Mitchells, which gave excellent service.
Courtesy of www.forces-war-recons.co.uk/record