| Regimental number | 1690 |
| Place of birth | Mohill, Ireland |
| Other Names | McCormack, William R |
| Religion | Church of England |
| Occupation | Labourer |
| Address | c/o Mr J J May, Newlyn, Victoria |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Father, Robert McCormack, Tolcon, Loughryn, Dromod, County Leitrin, Irlenad |
| Enlistment date | 27 March 1916 |
| Date of enlistment from Nominal Roll | 29 March 1916 |
| Place of enlistment | Ballarat, Victoria |
| Rank on enlistment | Private |
| Unit name | 39th Battalion, 1st Reinforcement |
| AWM Embarkation Roll number | 23/56/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A11 Ascanius on 27 May 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 8th Battalion |
| Fate | Returned to Australia 25 August 1917 |
| Place of burial | Springvale Cemetery, Victoria |
| Date of death | 18 May 1921 |
| Sources | NAA: B2455, McCORMACK William Robert |