| Regimental number | 38744 |
| Religion | Roman Catholic |
| Occupation | Blacksmith |
| Address | Helidon, Queensland |
| Marital status | Single |
| Age at embarkation | 43 |
| Next of kin | Mother, Mrs Jane O'Sullivan, Helidon, Queensland |
| Enlistment date | 21 May 1917 |
| Rank on enlistment | Gunner |
| Unit name | Field Artillery Brigade, Reinforcement 33 |
| AWM Embarkation Roll number | 13/128/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A38 Ulysses on 19 December 1917 |
| Rank from Nominal Roll | Gunner |
| Unit from Nominal Roll | 1-5 Division Field Artillery Brigade |
| Fate | Returned to Australia 19 October 1918 |
| Family/military connections | Brother: 702 Pte Patrick O'SULLIVAN, 23rd Bn. |