
| Regimental number | 6867 |
| Place of birth | Caithness, Scotland |
| Other Names | Sinclair, Alex |
| Religion | Presbyterian |
| Occupation | Labourer |
| Address | Bundaberg, Queensland |
| Marital status | Single |
| Age at embarkation | 36 |
| Height | 6' 0.5" |
| Weight | 162 lbs |
| Next of kin | Father, Alexander Sinclair, Halkirk, Caithness, Scotland |
| Previous military service | 5 years. Volunteers Scotland. Time Expired. |
| Enlistment date | |
| Place of enlistment | Brisbane, Queensland |
| Rank on enlistment | Private |
| Unit name | 25th Battalion, 20th Reinforcement |
| AWM Embarkation Roll number | 23/42/6 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A20 Hororata on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 25th Battalion |
| Fate | Returned to Australia |
| Date of death | |
| Place of burial | Brisbane General Cemetery, Qld |
| Discharge date | |
| Other details |
War service: Western Front Commenced return to Australia on board HT 'Ceramic', 26 August 1917; disembarked Melbourne, 15 September 1917, for onward travel to Brisbane; discharged (medically unfit), Brisbane, 13 March 1918. Medal: British War Medal |
| Sources | NAA: B2455, SINCLAIR Alexander |