| Regimental number | 2121 |
| Place of birth | Warialda New South Wales |
| Religion | Presbyterian |
| Occupation | Student |
| Address | 509 Albert Street, North Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, Dr Robert Steele MacKinnon, same address |
| Enlistment date | 25 August 1915 |
| Date of enlistment from Nominal Roll | 8 September 1915 |
| Rank on enlistment | Private |
| Unit name | 7th Light Horse Regiment, 14th Reinforcement |
| AWM Embarkation Roll number | 10/12/4 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A57 Malakuta on 16 March 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 6th Light Horse Regiment |
| Fate | Returned to Australia 12 November 1917 |
