| Regimental number | 105 |
| Place of birth | Don, Tasmania |
| School | State School, Tasmania |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Elliott via Burnie, Tasmania |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Father, James Armstrong, Elliott via Burnie, Tasmania |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 40th Battalion, A Company |
| AWM Embarkation Roll number | 23/57/1 |
| Embarkation details | Unit embarked from Hobart, Tasmania, on board HMAT A35 Berrima on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 40th Battalion |
| Fate | Killed in Action |
| Place of death or wounding | France |
| Age at death | 25 |
| Age at death from cemetery records | 25 |
| Place of burial | Suzanne Military Cemetery No. 3 (Plot I, Row E, Grave No. 18), France |
| Panel number, Roll of Honour, Australian War Memorial | 132 |
| Miscellaneous information from cemetery records | Parents: James and Frances ARMSTRONG, Elliott, Tasmania |
| Family/military connections | Brother to the late Pte E J Armstrong 49th Battalion. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |