Captain Indra Lal Roy was credited with 10 aerial victories, within two weeks in July 1918, while piloting a Royal Aircraft Factory S.E.5a in No. 40 Squadron RAF. He is the only Indian ace of the war.
Franks, Norman; Guest, Russell F. & Alegi, Gregory (1997). Above the War Fronts: The British Two-seater Bomber Pilot and Observer Aces, the British Two-seater Fighter Observer Aces, and the Belgian, Italian, Austro-Hungarian and Russian Fighter Aces, 1914–1918. London, UK: Grub Street. ISBN 978-1-898697-56-5.
Shores, Christopher F.; Franks, Norman & Guest, Russell F. (1990). Above the Trenches: a Complete Record of the Fighter Aces and Units of the British Empire Air Forces 1915–1920. London, UK: Grub Street. ISBN 978-0-948817-19-9.