| Regimental number | 2026 |
| Place of birth | Nathalia, Victoria |
| Religion | Presbyterian |
| Occupation | Clerk |
| Address | Nathalia, Victoria |
| Marital status | Single |
| Age at embarkation | 27 |
| Next of kin | Father, David Caldwell, Nathalia, Victoria |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 37th Battalion, 3rd Reinforcement |
| AWM Embarkation Roll number | 23/54/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A9 Shropshire on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 3rd Machine Gun Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brother: 917 Pte Alexander Frederick CALDWELL, 6th Bn, returned to Australia, 17 March 1916. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |