| Place of birth | Balmain, New South Wales |
| School | Gladstone Park Public School, Balmain, New South Wales |
| Religion | Presbyterian |
| Occupation | Accountant |
| Address | Glendalyn, Fitzwilliam Road, Vaucluse, New South Wales |
| Marital status | Married |
| Age at embarkation | 23 |
| Next of kin | Wife, Mrs J B Smith, C/ G. Cubis, Fitwilliam Road, Vaucluse, New South Wales |
| Previous military service | Served in the Cadets at the age of 14 for two years. |
| Enlistment date | |
| Rank on enlistment | 2nd Lieutenant |
| Unit name | 3rd Battalion, 20th Reinforcement |
| AWM Embarkation Roll number | 23/20/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A14 Euripides on |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 3rd Battalion |
| Fate | Died of wounds |
| Miscellaneous details (Nominal Roll) | *Given name Forbes Tynan |
| Place of death or wounding | Reninhelst, Ypres, Belgium |
| Age at death | 25 |
| Age at death from cemetery records | 25 |
| Place of burial | The Huts Cemetery (Plot IX, Row A, Grave No. 25), Belgium |
| Panel number, Roll of Honour, Australian War Memorial | 38 |
| Miscellaneous information from cemetery records | Parents: David and Maude SMITH; husband of Leila SMITH, Glendalyn, Fitzwilliam Road, Vaucluse, New South Wales. Native of Balmain, New South Wales |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |