| Date of birth | |
| Other Names | O'BRIEN, John Aloysius~~ |
| Occupation | Medical practitioner |
| Address | 47 Mary Street, Grace Park, Hawthorn, Victoria |
| Marital status | Single |
| Age at embarkation | 28 |
| Next of kin | Father, Dr J A O'Brien, 47 Mary Street, Grace Park, Hawthorn, Victoria |
| Enlistment date | |
| Rank on enlistment | Major |
| Unit name | 3rd Australian Casualty Clearing Station |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A7 Medic on |
| Rank from Nominal Roll | Major |
| Unit from Nominal Roll | Australian Army Medical Corps |
| Promotions |
Captain Unit: MED 1st Cas Clear Stn Promotion date: Major Unit: 3rd Cas Clear Stn Promotion date: |
| Fate | Returned to Australia |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
