| Regimental number | 2762 |
| Date of birth | |
| Place of birth | Wokurna, South Australia |
| Religion | Church of England |
| Occupation | Baker |
| Address | Bute, South Australia |
| Marital status | Single |
| Age at embarkation | 20.1 |
| Height | 5' 7" |
| Weight | 129 lbs |
| Next of kin | Father, James Warren, Bute, South Australia |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Adelaide, South Australia |
| Rank on enlistment | Private |
| Unit name | 9th Light Horse Regiment, 19th Reinforcement |
| AWM Embarkation Roll number | 10/14/4 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board RMS Mongolia on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 15th Light Horse Regiment |
| Fate | Returned to Australia |
| Discharge date | |
| Family/military connections | Brother: 2763 Pte James Martin WARREN, 15th Light Horse Regiment, returned to Australia, 28 January 1919. |
| Other details |
Commenced return to Australia from Kantara on board HT 'Port Sydney', 5 March 1919; discharged (medically unfit: malaria), Adelaide, 12 June 1919. War service: Egypt, Palestine Medals: British War Medal, Victory Medal |
| Date of death | |
| Age at death | 90 |
| Sources | NAA: B2455, WARREN Clarence Rheinold |