
| Regimental number | 7297 |
| Place of birth | Port Lincoln, South Australia |
| Religion | Church of England |
| Occupation | Railway employee |
| Address | Coolgardie, Western Australia |
| Marital status | Married |
| Age at embarkation | 44 |
| Height | 6' 0" |
| Weight | 174 lbs |
| Next of kin | Wife, Mrs Marrian Alice Sinclair, Gnarlbine Road, Coolgardie, Western Australia |
| Previous military service | Nil |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Kalgoorlie, Western Australia |
| Rank on enlistment | Private |
| Unit name | 16th Battalion, 24th Reinforcement |
| AWM Embarkation Roll number | 23/33/6 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A28 Miltiades on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 16th Battalion |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Parents: James and Ann SINCLAIR |
| Discharge date | |
| Other details |
War service: Western Front Commenced return to Australia on board HT 'Sardinia', 19 October 1918; disembarked Perth, 16 December 1918; discharged (medically unfit), Perth, 7 February 1919. Medals: British War Medal, Victory Medal |
| Date of death | |
| Age at death | 59 |
| Place of burial | East Rockingham Cemetery, Western Australia |
| Sources | NAA: B2455, SINCLAIR Frederick William |