| Regimental number | 3708 |
| Place of birth | Naracoorte, South Australia |
| Religion | Methodist |
| Occupation | Agent |
| Address | c/o J Blackwell, Narracoorte, South Australia |
| Marital status | Single |
| Age at embarkation | 20.9 |
| Height | 5' 8.5" |
| Weight | 128.5 lbs |
| Next of kin | Father, John B Blackwall, Narracoorte, South Australia |
| Previous military service | Served for 3 years in the 22nd Light Horse Regiment, Citizen Military Forces; still serving at time of AIF enlistment. |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Keswick, South Australia |
| Rank on enlistment | Private |
| Unit name | Infantry Brigade 7, Field Ambulance 7, Section B |
| AWM Embarkation Roll number | 26/50/1 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A2 Geelong on |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT Clan Mcewan on |
| Rank from Nominal Roll | Corporal |
| Unit from Nominal Roll | 7th Field Ambulance |
| Fate | Returned to Australia |
| Discharge date | |
| Other details |
War service: Egypt, Gallipoli, Western Front Commenced return to Australia on board HT 'Wiltshire', 12 November 1916 (supporative appendicitis) Re-embarked from Adelaide on board HT 'Miltiades', 24 January 1917. Commenced return to Australia on board HT 'Commonwealth' (Nursing Staff), 13 April 1919; discharged (termination of period of enlistment), Adelaide, 13 August 1919. Medals: 1914-15 Star, British War Medal, Victory Medal |
| Date of death | |
| Place of burial | West Terrace Cemetery, Adelaide, South Australia |
| Sources | NAA: B2455, BLACKWELL Alex Thomas |