| Regimental number | 3735 |
| Place of birth | London England |
| Religion | Church of England |
| Occupation | Labourer |
| Address | Denman, New South Wales |
| Marital status | Single |
| Age at embarkation | 40 |
| Next of kin | Brother, Joseph Bowen Walker, Newmarket, Victoria |
| Enlistment date | 11 April 1917 |
| Date of enlistment from Nominal Roll | 15 April 1917 |
| Rank on enlistment | Private |
| Unit name | 45th Battalion, 10th Reinforcement |
| AWM Embarkation Roll number | 23/62/4 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A74 Marathon on 10 May 1917 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 45th Battalion |
| Fate | Returned to Australia 11 January 1918 |
| Miscellaneous details (Nominal Roll) | *Spelt James Powen Walker on NR |