No. 104 Squadron RAF was formed at Wyton, England on 4 September 1917 and was equipped with the DH 9. It then moved to Andover, prior to being posted to France in May 1918. The squadron later began re-equipping with the DH 10, however the armistice arrived before this was completed and the squadron returned home, first to Turnhouse and then to Crail where it disbanded on 30 June 1919. Eight flying aces served within its ranks, including future Rear Admiral Arthur Rullion Rattray, Jeffrey Batters Home-Hay, William Bottrill, Richard Gammon and W. Harrop.