| Regimental number | 2322 |
| Place of birth | Mitcham, South Australia |
| Religion | Baptist |
| Occupation | Farmer |
| Address | Brunswick Junction, Western Australia |
| Marital status | Single |
| Age at embarkation | 32 |
| Next of kin | Father, Richard Dewdney, Franklin Street, Adelaide, South Australia |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Private |
| Unit name | 10th Light Horse Regiment, 16th Reinforcement |
| AWM Embarkation Roll number | 10/15/3 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A52 Surada on |
| Regimental number from Nominal Roll | Commissioned |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 3rd Machine Gun Squadron |
| Promotions |
2nd Lieutenant Unit: 3rd Sqn MG Corps Promotion date: |
| Fate | Returned to Australia |
| Miscellaneous details (Nominal Roll) | *Stated to be Arthur Morrow Dewdney on NR |