| Regimental number | 13353 |
| Occupation | Labourer |
| Next of kin | Brother, Dan McCallum Jnr, Makatui near Wright's Bush, Invercargill |
| Rank on embarkation | Trooper |
| Unit name | New Zealand Expeditionary Force, 13th Reinforcements, New Zealand Mounted Rifles Brigade |
| Embarkation details | Unit embarked from Wellington on |
| Final rank | Private |
| Final unit | 2nd Battalion, Otago Infantry Regiment |
| Fate | Killed in Action |
| Age at death from cemetery records | 29 |
| Place of burial | No known grave |
| Commemoration details | Caterpillar Valley (New Zealand) Memorial, Longueval, France |
| Miscellaneous information from cemetery records | Parents: Daniel McCallum, Wright's Bush, Southland, and the late Jeanie McCallum |
| Other details | Medals: British War Medal, Victory Medal |
| Sources | Nominal Roll Vol. 2: Roll 33, p. 3 |