| Regimental number | 15775 |
| Place of birth | Murwillumbah New South Wales |
| Religion | Presbyterian |
| Occupation | Survey draftsman |
| Address | Orange, New South Wales |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Mother, Mrs Mary Caldwell, March Street, Orange, New South Wales |
| Previous military service | 42nd Infantry |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Sapper |
| Unit name | October 1916 Reinforcements |
| AWM Embarkation Roll number | 14/42/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A74 Marathon on |
| Rank from Nominal Roll | Sapper |
| Unit from Nominal Roll | 14th Field Company Engineers |
| Fate | Returned to Australia |
| Miscellaneous details (Nominal Roll) | *Spelt Arnold Cassin Caldwell on NR |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
