| Regimental number | 2831 |
| Place of birth | St Kilda, Victoria |
| Religion | Church of England |
| Occupation | News agent |
| Address | Hampton, Victoria |
| Marital status | Single |
| Age at embarkation | 23 |
| Height | 5' 7" |
| Weight | 140 lbs |
| Next of kin | Mother, Mrs A Hartsman, Hampton Street, Hampton, Melbourne, Victoria |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Melbourne, Victoria |
| Rank on enlistment | Private |
| Unit name | 14th Battalion, 9th Reinforcement |
| AWM Embarkation Roll number | 23/31/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A20 Hororata on |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 4th Divisional Signal Company |
| Fate | Returned to Australia |
| Discharge date | |
| Other details |
War service: Egypt, Western Front Joined 14th Bn, Ismailia, 8 January 1916. Attached to 3rd Signal Company, 27 January 1916; taken on strength as Sapper, 1 February 1916. Taken on strength, 4th Divisional Signal Company, Tel el Kebir, 9 March 1916. Embarked Alexandria to join the British Expeditionary Force, 2 June 1916; disembarked Marseilles, France, 8 June 1916. Sick to hospital, 12 September 1916; rejoined unit, in the field, 20 September 1916 (no further details recorded). Appointed Lance Corporal, 2 June 1917. Promoted Temporary 2nd Corporal, 24 November 1917; 2nd Corporal same day. On leave to United Kingdom, 18 June 1917; rejoined unit from leave, 28 June 1917. On leave to United Kingdom, 26 August 1918; rejoined unit from leave, 11 September 1918. Promoted Temporary Corporal, 8 September 1918. Marched out for return to Australia, 9 January 1919; transferred to England, 15 January 1919; marched in to No 1 Command Depot, Sutton Veny, 16 January 1919. Commenced return to Australia on board HT 'Warwickshire', 5 April 1919; disembarked Melbourne, 28 May 1919; discharged (medically unfit), Melbourne, 2 September 1919. Medals: 1914-15 Star, British War Medal, Victory Medal |
| Date of death | |
| Place of burial | Wodonga Cemetery, Victoria |
| Sources | NAA: B2455, HARTSMAN Oscar Gordon |