| Regimental number | 1626 |
| Place of birth | Mount Gambier, South Australia |
| School | Public schools, Hindmarsh, North Adelaide, Nailsworth |
| Other training | Cadets, Citizen Military Forces |
| Religion | Church of England |
| Occupation | Farmer |
| Address | Glencoe East, South Australia |
| Marital status | Single |
| Age at embarkation | 23.1 |
| Height | 5' 7.5" |
| Weight | 157 lbs |
| Next of kin | Father, Henry Blackmore, same address |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Mount Gambier, South Australia |
| Rank on enlistment | Private |
| Unit name | 43rd Battalion, 1st Reinforcement |
| AWM Embarkation Roll number | 23/60/2 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A19 Afric on |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 43rd Battalion |
| Other details from Roll of Honour Circular | Enlisted 20 March 1916 - 43rd Bn, 1st Reinforcements. Taken on strength, 43rd Bn, 12 November 1916. Appointed Lance Corporal, 27 May 1917. Mortally wounded, 4 July 1917. |
| Fate | Died of wounds |
| Place of death or wounding | Messines, Belgium |
| Age at death | 24 |
| Place of burial | Trois-Arbres Cemetery (Plot I, Row R, Grave No. 36), Steenwerck, France |
| Panel number, Roll of Honour, Australian War Memorial | 161 |
| Other details |
War service: Western Front Wounded in action, 4 July 1917 (gun shot wound, head). Died of wounds received in action, 5 July 1917. Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, BLACKMORE John Henry |