| Regimental number | 7685 |
| Place of birth | Oberon New South Wales |
| Religion | Methodist |
| Occupation | Labourer |
| Address | Cowra, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, Mr R J Armstrong, Cowra, New South Wales |
| Enlistment date | 26 November 1917 |
| Rank on enlistment | Private |
| Unit name | 3rd Battalion, 26th Reinforcement |
| AWM Embarkation Roll number | 23/20/4 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A71 Nestor on 28 February 1918 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 34th Battalion |
| Fate | Effective abroad (still overseas) |
| Family/military connections | Brother: 6460 Pte Ivo Robert ARMSTRONG, 2nd Bn, returned to Australia, 21 April 1918. |