| Regimental number | 3391 |
| Date of birth | |
| Place of birth | Sydney, New South Wales |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | South Brisbane, Queensland |
| Marital status | Married |
| Age at embarkation | 27 |
| Height | 5' 8" |
| Weight | 147 lbs |
| Next of kin | Wife, Mrs Matilda Josephine Walker, c/o Mrs Clery, Merivale Street, South Brisbane, Queensland |
| Previous military service | Nil(previously rejected for AIF enlistment: reasons 'not known') |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 41st Battalion, 8th Reinforcement |
| AWM Embarkation Roll number | 23/58/3 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A20 Hororata on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 41st Battalion |
| Fate | Returned to Australia |
| Miscellaneous information from cemetery records | Plaque in Queensland Garden of Remembrance |
| Discharge date | |
| Other details |
War service: embarked from Sydney, 14 June 1917; disembarked Capetown, South Africa, 22 July 1917, and admitted to Infectious Hospital (meningitis). Discharged from hospital, 20 August 1917. Commenced return to Australia from Cape Town on board HT 'Ceramic', 26 August 1917; disembarked Brisbane, 23 October 1917; discharged (medically unfit), 23 October 1917. Medal: British War Medal |
| Date of death | |
| Age at death | 76 |
| Place of burial | Bulimba Cemetery, Brisbane, Queensland |
| Sources | NAA: B2455, WALKER William John |