| Regimental number | 1968 |
| Place of birth | Koroit, Victoria |
| Religion | Roman Catholic |
| Occupation | Draper |
| Address | Koroit Hotel, Koroit, Victoria |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, James Francis Duffus, Koroit Hotel, Koroit, Victoria |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Deniliquin, New South Wales |
| Rank on enlistment | Private |
| Unit name | 8th Light Horse Regiment, 14th Reinforcement |
| AWM Embarkation Roll number | 10/13/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A1 Hymettus on |
| Rank from Nominal Roll | Trooper |
| Unit from Nominal Roll | 8th Light Horse Regiment |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 614 Sergeant Edward Patrick DUFFUS, Australian Army Postal Corps, returned to Australia, 12 March 1918; 1967 Gunner Frederick Stanislaw DUFFUS, 4th Divisional Signal Company, returned to Australia, 12 May 1919; 1688 Gunner Leonard DUFFUS, 1st Wing Headquarters, Australian Flying Corps, returned to Australia, 3 July 1919. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |