| Regimental number | 36648 |
| Religion | Methodist |
| Occupation | Civil servant |
| Address | Telegraph Road, Pymble, Sydney, New South Wales |
| Marital status | Married |
| Age at embarkation | 39 |
| Next of kin | Wife, Mrs Ethel Jane O'Reilly, 'Hyper', Telegraph Road, Pymble, Sydney, New South Wales |
| Enlistment date | 20 January 1917 |
| Rank on enlistment | Gunner |
| Unit name | Field Artillery Brigade, Reinforcement 29 |
| AWM Embarkation Roll number | 13/128/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A15 Port Sydney on 5 November 1917 |
| Rank from Nominal Roll | Gunner |
| Unit from Nominal Roll | 3rd Field Artillery Brigade |
| Fate | Returned to Australia 19 June 1919 |
| Miscellaneous details (Nominal Roll) | *Spelt Walter Cresswell O'Reilly on NR |
