| Regimental number | 10591 |
| Place of birth | Castlemaine, Victoria |
| Religion | Presbyterian |
| Occupation | Civil servant |
| Address | Camp Hill, Castlemaine, Victoria |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Father, George Caldwell, Camp Hill, Castlemaine, Victoria |
| Enlistment date | |
| Rank on enlistment | Sapper |
| Unit name | Divisional Signal Company 3 |
| AWM Embarkation Roll number | 22/13/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A11 Ascanius on |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 3rd Divisional Ammunition Column |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Plaque in Victorian Garden of Remembrance |
| Family/military connections | Brother: 6308 Pte George Robert CALDWELL, 28th Bn, returned to Australia, 12 July 1919. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |
| Date of death |