| Regimental number | 90 |
| Other Names | HADDOW, Thomas Grain |
| Religion | Presbyterian |
| Occupation | Labourer |
| Address | Kahihah, Newcastle, New South Wales |
| Marital status | Single |
| Age at embarkation | 23 |
| Next of kin | Father, Daniel Haddon, Kahihah, Newcastle, New South Wales |
| Enlistment date | 16 December 1915 |
| Rank on enlistment | Private |
| Unit name | 36th Battalion, 1st Reinforcement |
| AWM Embarkation Roll number | 23/53/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A72 Beltana on 13 May 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 56th Battalion |
| Fate | Returned to Australia 15 January 1919 |