| Regimental number | 1136 |
| Place of birth | Yacka, South Australia |
| Religion | Methodist |
| Occupation | Labourer |
| Address | Yacka, South Australia |
| Marital status | Single |
| Age at embarkation | 31.7 |
| Height | 5' 4.5" |
| Weight | 132 lbs |
| Next of kin | Mother, Mrs Sarah Duffield, Yacka, South Australia |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Adelaide, South Australia |
| Rank on enlistment | Private |
| Unit name | 3rd Pioneer Battalion, D Company |
| AWM Embarkation Roll number | 14/15/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A62 Wandilla on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 3rd Pioneer Battalion |
| Fate | Returned to Australia |
| Discharge date | |
| Family/military connections | Brother: 6770 Pte Joseph DUFFIELD, 48th Bn, returned to Australia, 7 July 1919. |
| Other details |
War service: Western Front Commenced return to Australia on board HT 'Konigen Luise', 21 June 1919; discharged (termination of period of enlistment), Adelaide, 25 September 1919. Medals: British War Medal, Victory Medal |
| Date of death | |
| Age at death | 80 |
| Place of burial | Enfield Memorial Park, Adelaide, South Australia |
| Sources | NAA: B2455, DUFFIELD Ernest William |