| Regimental number | 3730 |
| Place of birth | Townsville Queensland |
| Religion | Roman Catholic |
| Occupation | Tiler |
| Address | Henry and Mitchell Street, Greenwich Point, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, Charles Sydney Thorn, Henry and Mitchell Street, Greenwich Point, Sydney, New South Wales |
| Enlistment date | 13 May 1917 |
| Date of enlistment from Nominal Roll | 28 May 1917 |
| Rank on enlistment | Private |
| Unit name | 7th Light Horse Regiment, 33rd Reinforcement |
| AWM Embarkation Roll number | 10/12/5 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board SS Canberra on 16 November 1917 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 7th Light Horse Regiment |
| Fate | Returned to Australia 16 March 1919 |
| Family/military connections | Brother: 300 Sapper John Mansfield THORN, Mining Corps 1, Company 1, returned to Australia 20 April 1919. |