| Regimental number | 1216 |
| Place of birth | Port Germein, South Australia |
| Religion | Methodist |
| Occupation | Farmer |
| Address | Rudall, Eyre's Peninsula, South Australia |
| Marital status | Single |
| Age at embarkation | 24.8 |
| Height | 5' 7" |
| Weight | 129 lbs |
| Next of kin | Father, Archibald McCallum, Willowie, South Australia |
| Previous military service | Nil |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Kadina, South Australia |
| Rank on enlistment | Private |
| Unit name | 3rd Pioneer Battalion, D Company |
| AWM Embarkation Roll number | 14/15/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A62 Wandilla on |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 3rd Pioneer Battalion |
| Fate | Returned to Australia |
| Discharge date | |
| Family/military connections | Brother: 1217 Pte James Clarke McCALLUM, 3rd Pioneer Bn, returned to Australia, 14 January 1919. |
| Other details |
War service: Western Front Commenced return to Australia on board HT 'Karmala', 14 January 1919; discharged (medically unfit: influenza), Adelaide, 29 March 1919. Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, McCALLUM John Albert |