| Regimental number | 1070 |
| Other Names | CHAPMAN, William Henry |
| School | Kyneton State School, Victoria |
| Religion | Church of England |
| Occupation | Driver |
| Address | Heathcote, New South Wales |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | C Chapman, Heathcote, New South Wales |
| Previous military service | No |
| Enlistment date | 2 March 1915 |
| Date of enlistment from Nominal Roll | 5 May 1915 |
| Rank on enlistment | Private |
| Unit name | 23rd Battalion, C Company |
| AWM Embarkation Roll number | 23/40/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A14 Euripides on 10 May 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 23rd Battalion |
| Fate | Killed in Action 3 May 1917 |
| Place of death or wounding | Bullecourt, France |
| Age at death | 23 |
| Family/military connections | Cousins: Alfred Leslie & Thomas Benjamine Ryan, killed in action, and John Thomas Eyre, died of wounds |