| Regimental number | 2811 |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | 95 Jane Street, Valley, Brisbane, Queensland |
| Marital status | Single |
| Age at embarkation | 29 |
| Next of kin | Brother, Michael John O'Brien, 95 Jane Street, Valley, Brisbane, Queensland |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 25th Battalion, 6th Reinforcement |
| AWM Embarkation Roll number | 23/42/2 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A48 Seang Bee on |
| Rank from Nominal Roll | Corporal |
| Unit from Nominal Roll | 9th Battalion |
| Fate | Returned to Australia |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
