| Regimental number | 26 |
| Religion | Roman Catholic |
| Occupation | Blacksmith |
| Address | Richmond, Victoria |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, William Henry O'Brien, 257 Lennox Street, Richmond, Victoria |
| Previous military service | 58th Infantry |
| Enlistment date | |
| Rank on enlistment | Blacksmith |
| Unit name | Australian Ordnance Corps (Inspector Ordnance Machinery Section) |
| AWM Embarkation Roll number | 2/12/1 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A30 Borda on |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | Australian Corps Signal Company |
| Fate | Returned to Australia |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
