| Regimental number | 16949 |
| Date of birth | |
| Place of birth | Sydney, New South Wales |
| Religion | Presbyterian |
| Occupation | Surveyor's assistant |
| Address | Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 21.8 |
| Height | 5' 10" |
| Weight | 192 lbs |
| Next of kin | Father, John Archibald Aitken, 'Elleray,' Alma Street, Ashfield, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Sydney, New South Wales |
| Rank on enlistment | Sapper |
| Unit name | January 1917 Reinforcements |
| AWM Embarkation Roll number | 14/42/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board RMS Osterley on |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 6th Field Company Engineers |
| Fate | Returned to Australia |
| Discharge date | |
| Other details |
War service: Western Front Granted leave with pay and subsistence, 15 March-20 June 1919 (attending AIF Survey School, Southampton). Commenced return to Australia on board HT 'Norman', 4 July 1919; disembarked Sydney, 20 August 1919; discharged (termination of period of enlistment), Sydney, 27 September 1919. Medals: British War Medal, Victory Medal Also served in World War II: Service No N390822. |
| Sources | NAA: B2455, AITKEN John Leighton |