| Regimental number | 1849 |
| Place of birth | Port Adelaide, South Australia |
| Religion | Methodist |
| Occupation | Farmer |
| Address | Bruce Rock via Merridan, Western Australia |
| Marital status | Single |
| Age at embarkation | 20 |
| Next of kin | Father, Henry Bustler, Bruce Rock via Merridan, Western Australia |
| Enlistment date | 21 October 1915 |
| Rank on enlistment | Private |
| Unit name | 10th Light Horse Regiment, 13th Reinforcement |
| AWM Embarkation Roll number | 10/15/2 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A30 Borda on 17 January 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 4th Division Ammunition Column |
| Fate | Returned to Australia 17 June 1918 |
| Miscellaneous details (Nominal Roll) | *Walker spelt Walter |
