| Regimental number | 3448 |
| Date of birth | |
| Religion | Church of England |
| Occupation | Labourer |
| Address | Somerset, Tasmania |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Father, T Armstrong, Somerset, Tasmania |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 12th Battalion, 11th Reinforcement |
| AWM Embarkation Roll number | 23/29/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A11 Ascanius on |
| Regimental number from Nominal Roll | Commissioned |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 49th Battalion |
| Promotions |
2nd Lieutenant Unit: INF52 Promotion date: Lieutenant Unit: INF49 Promotion date: |
| Fate | Returned to Australia |
| Family/military connections | Brother: 3446 Pte Percy Leybourne ARMSTRONG, returned to Australia, 11 April 1916. |