| Regimental number | 765 |
| Place of birth | Katoomba New South Wales |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Kerry, Beaudesert, Queensland |
| Marital status | Single |
| Age at embarkation | 22 |
| Next of kin | Mother, Mrs J O'Reilly, 'Hyning', Griffith Street, Sandgate, Brisbane, Queensland |
| Enlistment date | 16 April 1917 |
| Rank on enlistment | Private |
| Unit name | Machine Gun Company 13, Reinforcement 14 |
| AWM Embarkation Roll number | 24/18/4 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A71 Nestor on 21 November 1917 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 3rd Machine Gun Battalion |
| Fate | Returned to Australia 6 September 1919 |
| Family/military connections | Brothers: 764 Private Eugene Michael O'REILLY, Machine Gun Company 13,Reinforcement 14, returned to Australia 15 April 1918; 6371 Private Norbert Gilroy O'REILLY, 25th Battalion, 18th Reinforcement, died of wounds 23 September 1917. First Cousins: 3221 Private Thomas Cormack SMITH, 18th Battalion, 7th Reinforcement, killed in action 21 October 1917, Ypres, Belgium; 3563 Private Ernest William SMITH, 13th Battalion, 11th Reinforcement, returned to Australia 18 March 1919.~ |
