| Regimental number | 3543 |
| Other Names | McALLISON, William |
| Religion | Church of England |
| Occupation | Labourer |
| Marital status | Single |
| Age at embarkation | 32 |
| Next of kin | Brother, E Williams, Sydney, New South Wales |
| Enlistment date | 6 August 1915 |
| Date of enlistment from Nominal Roll | 5 August 1915 |
| Rank on enlistment | Private |
| Unit name | 10th Battalion, 11th Reinforcement |
| AWM Embarkation Roll number | 23/27/3 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A24 Benalla on 27 October 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 10th Battalion |
| Fate | Returned to Australia 24 June 1916 |
| Date of death | 21 February 1940 |
| Age at death | 57 |
| Place of burial | AIF Cemetery (Path 7, Grave 8 C North), West Terrace, Adelaide, South Australia |
