| Regimental number | 2134 |
| Place of birth | Mackay Queensland |
| Religion | Presbyterian |
| Occupation | Labourer |
| Address | Mackay, Queensland |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Father, James Duncan, Mackay, Queensland |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 25th Battalion, 4th Reinforcement |
| AWM Embarkation Roll number | 23/42/2 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A26 Armadale on |
| Rank from Nominal Roll | Corporal |
| Unit from Nominal Roll | 25th Battalion |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Listed on Farleigh Mill & District Roll of Honor, Mackay, Queensland. |
| Family/military connections | Brothers: 44 Pte Charles DUNCAN, 52nd Bn, killed in action, 23 September 1917; 2163 Pte William DUNCAN, 47th Bn, returned to Australia, 5 April 1919. |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |