| Regimental number | 1781 |
| Place of birth | Mackay Queensland |
| Religion | Church of England |
| Occupation | Clerk |
| Address | Alfred Street, Mackay, Queensland |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Mother, Mrs Emily Procopis, Alfred Street, Mackay, Queensland |
| Enlistment date | 6 December 1915 |
| Rank on enlistment | Private |
| Unit name | 11th Light Horse Regiment, 9th Reinforcement |
| AWM Embarkation Roll number | 10/16/3 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A49 Seang Choon on 4 May 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 3rd Machine Gun Squadron |
| Fate | Returned to Australia 20 July 1919 |
| Miscellaneous details (Nominal Roll) | *second given name two spellings Walker and Walter |
