| Regimental number | 2846 |
| Place of birth | Waverley New South Wales |
| Religion | Church of England |
| Occupation | Clerk |
| Address | 'Strathmore', New South Head Road, Vaucluse, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Father, Frederick Thomas Dunn, 'Strathmore', New South Head Road, Vaucluse, Sydney, New South Wales |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 1st Pioneer Battalion, 6th Reinforcement |
| AWM Embarkation Roll number | 14/13/4 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A30 Borda on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 1st Pioneer Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 549 Pte Roy Arthur DUNN, 3rd Machine Gun Bn, returned to Australia, 8 July 1919; 14944 Sapper Harold Frederick DUNN, 9th Field Company Engineers, returned to Australia, 18 January 1919. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |