| Regimental number | 4664 |
| Place of birth | Clifton Hill, Victoria |
| Place of birth | Clifton Hill, Melbourne, Victoria |
| School | St Pauls Cathedral, Melbourne, Victoria |
| Religion | Church of England |
| Occupation | Accountant |
| Address | 1 Osborne Street, West Brunswick, Victoria |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Father, Alexander Styles, 1 Osborne Street, West Brunswick, Victoria |
| Previous military service | Served as Lieutenant in 59th Area, Brunswick. |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 29th Battalion, 12th Reinforcement |
| AWM Embarkation Roll number | 23/46/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A7 Medic on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 29th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | *Given name Horace Alexander |
| Place of death or wounding | Sailly-le-Sec, Somme Sector, France |
| Age at death | 21.4 |
| Age at death from cemetery records | 21 |
| Place of burial | Corbie Communal Cemetery Extension (Plot 2, Row D, Grave No. 68), France |
| Panel number, Roll of Honour, Australian War Memorial | 116 |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |