| Regimental number | 56909 |
| Date of birth | |
| Place of birth | Rolle, Switzerland |
| Religion | Church of England |
| Occupation | Jackeroo |
| Address | c/o Public Trustee, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 19 |
| Height | 5' 10.5" |
| Weight | 145 lbs |
| Next of kin | Father, Mr Aubrey Ceaser Upton Cottrell-Dormer, Koitahinumu, Sogeri District, Papua New Guinea |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Brisbane, Queensland |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 11th Light Horse Regiment |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Plaque in New South Wales Garden of Remembrance |
| Discharge date | |
| Other details |
War service: Egypt Commenced return to Australia on board HT 'Morvada', 22 July 1919; disembarked Sydney, 28 August 1919; discharged (medically unfit), Sydney, 14 April 1921. Medals: British War Medal, Victory Medal |
| Date of death | |
| Sources | NAA: B2455, COTTRELL-DORMER Aubrey Edward Upton |