| Place of birth | Sydney, New South Wales |
| School | Sydney Grammar School, Sydney, New South Wales |
| Occupation | Brickwork manager |
| Address | Pennant Hills Road, Thornleigh, New South Wales |
| Marital status | Married |
| Age at embarkation | 42 |
| Height | 5' 8" |
| Weight | 154 lbs |
| Next of kin | Wife, Mrs B E Thomas, Pennant Hills Road, Thornleigh, New South Wales |
| Previous military service | Nil no previous service |
| Enlistment date | |
| Place of enlistment | Sydney, New South Wales |
| Rank on enlistment | 2nd Lieutenant |
| Unit name | Light Trench Mortar Battery, Reinforcement 3 |
| AWM Embarkation Roll number | 13/130/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A11 Ascanius on |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | Light Trench Mortar Battery |
| Other details from Roll of Honour Circular | Slightly wounded and gassed three times. Died of chronic peritonitis and pneumonia, 14 February 1920. |
| Fate | Returned to Australia |
| Date of death | |
| Age at death | 47 |
| Age at death from cemetery records | 47 |
| Panel number, Roll of Honour, Australian War Memorial | 21 |
| Miscellaneous information from cemetery records | Husband of Beatrice E THOMAS. Native of Thornleigh, New South Wales. Plaque in Garden of Remembrance, NSW. |
| Family/military connections | Nephew: Corporal Alfred R. TOOGOOD, 17th Bn |
| Other details |
Commenced return to Australia on board HT 'City of Karachi', 24 August 1918; disembarked Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, THOMAS Cecil William |