| Regimental number | 4 |
| Place of birth | Sunderland, England |
| Religion | Methodist |
| Occupation | Farmer |
| Address | Menerambi, Kingaroy Line, Queensland |
| Marital status | Married |
| Age at embarkation | 27 |
| Height | 5' 9.25" |
| Next of kin | Wife, Mrs R M Armstrong, c/o Mrs W E Wilson, Howlong Road, Chiltern, Victoria |
| Previous military service | Served for 3 years in Northumberland Hussars. |
| Enlistment date | |
| Place of enlistment | Brisbane, Queensland |
| Rank on enlistment | Private |
| Unit name | 26th Battalion, A Company |
| AWM Embarkation Roll number | 23/43/1 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A11 Ascanius on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 2nd Machine Gun Battalion |
| Fate | Returned to Australia |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |
| Miscellaneous details | Address incorrectly entered on Embarkation Roll as Menerambi, Queensland. |
| Sources | NAA: B2455, ARMSTRONG Robert Mawson |