| Regimental number | 1380 |
| Place of birth | Carlton, Victoria |
| Religion | Roman Catholic |
| Occupation | Clerk |
| Address | 185 Eglinton Street, Moonee Ponds, Victoria |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Mother, Mrs Mary T Ennis, 185 Eglinton Street, Moonee Ponds, Victoria |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Acting Corporal |
| Unit name | 29th Battalion, 1st Reinforcement |
| AWM Embarkation Roll number | 23/46/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A11 Ascanius on |
| Rank from Nominal Roll | Staff Sergeant |
| Unit from Nominal Roll | Australian Employment Company |
| Fate | Returned to Australia |
| Family/military connections | Brothers: 2020 Lance Corporal Leo Joseph ENNIS, 29th Bn, killed in action, 20 July 1916; 4780 Pte Stanley John ENNIS, 8th Bn, returned to Australia, 21 July 1917. |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |