
| Regimental number | 4542 |
| Place of birth | Gympie, Queensland |
| Religion | Church of England |
| Occupation | Labourer |
| Address | Inglewood Hills, Gympie, Queensland |
| Marital status | Single |
| Age at embarkation | 18.6 |
| Height | 5' 3" |
| Weight | 125 lbs |
| Next of kin | Mother, Mrs Charlotte Emma Heirdsfield, Inglewood Hills, Gympie, Queensland |
| Previous military service | Nil (exempt area under Compulsory Military Training scheme) |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Brisbane, Queensland |
| Rank on enlistment | Private |
| Unit name | 31st Battalion, 12th Reinforcement |
| AWM Embarkation Roll number | 23/48/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A64 Demosthenes on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 31st Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brother: 7723 Pte Charles Frederick HEIRDSFIELD, 15th Bn, returned to Australia, 25 September 1919. |
| Other details |
War service: Western Front Commenced return to Australia on board HT 'Orvieto', 1 November 1919 (with wife); disembarked Brisbane, 19 December 1919; discharged (termination of period of enlistment), 2 February 1920. Medals: British War Medal, Victory Medal |
| Date of death | |
| Place of burial | Nambour Cemetery, Queensland |
| Sources | NAA: B2455, HEIRDSFIELD Jack Steven |