William Drummond Matheson
Captain William Drummond Matheson MC was a Canadian World War I flying ace credited with five aerial victories.
Sergeant Matheson was promoted to temporary 2nd lieutenant on 12 November 1916. He continued to serve with #25 Squadron from 12 November 1916 to 16 March 1917.
Wounded by machine gun fire, his left foot had to be amputated. After his hospitalization in Canada, on 2 Oct 1918 he was posted to the School of Special Flying;
and on 19 December 1918 he was again posted, this time to Headquarters.
His citation for the Military Cross, published in the Supplement to the London Gazette, states:
List of aerial victories
See also Aerial victory standards of World War I.| No. | Date/time | Aircraft | Foe | Result | Location | Notes |
| 1 | 22 October 1916 @ 09:00 hours | Royal Aircraft Factory FE.2b serial number 7007 | German Scout | Destroyed | Southwest of Seclin | Observer: William Meggitt |
| 2 | 22 November 1916 | FE.2b | Enemy aircraft | Driven down | Arras | |
| 3 | 24 January 1917 | FE.2b | German scout | Driven down | Mericourt | |
| 4 | 4 March 1917 @ 11:15 hours | FE.2b s/n 7025 | LVG two-seater | Destroyed | Courrieres | Observer: W. A. Barnes. Victory shared with three air crews, including Reginald Malcolm and Leonard Herbert Emsden |
| 5 | 16 March 1917 | FE.2b | Enemy aircraft | Driven down | Neuvireuil |