| Regimental number | 6742 |
| Place of birth | Boddington, Western Australia |
| Religion | Church of England |
| Occupation | Labourer |
| Address | Post Office, Merredin, Western Australia |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Brother, W F Day, Boddington, Western Australia |
| Enlistment date | 31 July 1916 |
| Date of enlistment from Nominal Roll | 3 July 1916 |
| Rank on enlistment | Private |
| Unit name | 11th Battalion, 22nd Reinforcement |
| AWM Embarkation Roll number | 23/28/4 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A8 Argyllshire on 9 November 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 11th Battalion |
| Fate | Returned to Australia 10 March 1918 |
| Miscellaneous details (Nominal Roll) | *Spelt Jabez Hennry Day on NR |
