| Regimental number | 2020 |
| Place of birth | Moonee Ponds, Victoria |
| School | Christian Brothers College, North Melbourne, Victoria |
| Religion | Roman Catholic |
| Occupation | Clerk |
| Address | Eglington Street, Moonee Ponds, Victoria |
| Marital status | Single |
| Age at embarkation | 19 |
| Height | 5' 7.5" |
| Weight | 132 lbs |
| Next of kin | Mother, Mrs Mary Ennis, Eglington Street, Moonee Ponds, Victoria |
| Previous military service | Served for 1 year in the 30th AIC. |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Rank on enlistment | Acting Corporal |
| Unit name | 29th Battalion, 3rd Reinforcement |
| AWM Embarkation Roll number | 23/46/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A70 Ballarat on |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 29th Battalion |
| Fate | Killed in Action |
| Place of death or wounding | Fromelles, France |
| Age at death | 19 |
| Age at death from cemetery records | 20 |
| Place of burial | No known grave |
| Commemoration details | V.C. Corner (Panel No 1), Australian Cemetery Memorial, Fromelles, France |
| Panel number, Roll of Honour, Australian War Memorial | 115 |
| Miscellaneous information from cemetery records | Commemorated on Essendon Rowing Club Roll of Honour. Parents: James Patrick and Mary Teresa ENNIS, 185 Eglinton Street, Moonee Ponds, Victoria |
| Family/military connections | Brothers: 1380 Staff Sergeant Francis Joseph ENNIS, Australian Employment Company, returned to Australia, 13 January 1919; 4780 Pte Stanley John ENNIS, 8th Bn, returned to Australia, 21 July 1917. |
| Other details |
War service: Egypt, Western Front Embarked Melbourne, 18 February 1916; disembarked Suez, 23 March 1916. Taken on strength of 29th Bn, Brighton Beach, 1 April 1916. Embarked Alexandria to join the British Expeditionary Force, 16 June 1916; disembarked Marseilles, France, 23 June 1916. Wounded in action, 19/20 July 1916. Previous report of wounded, now, 20 December 1916, to be reported as 'Wounded and Missing, 19/20 July 1916'. Court of Enquiry, held in the field, 23 August 1917, pronounced fate as 'Killed in Action, 20 July 1916'. Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, ENNIS Leo Joseph
Red Cross file 1011210 |