| Regimental number | 949 |
| Place of birth | Geelong Victoria |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Bossoule Road, Daceyville, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Father, William John O'Brien, Bossoule Road, Daceyville, Sydney, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 18th Battalion, C Company |
| AWM Embarkation Roll number | 23/35/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board Transport A40 Ceramic on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 18th Battalion |
| Fate | Returned to Australia |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
