| Regimental number | 1694 |
| Place of birth | Bunbury Western Australia |
| Religion | Roman Catholic |
| Occupation | Hairdresser |
| Address | Frederick Street, Albany, Western Australia |
| Marital status | Single |
| Age at embarkation | 29 |
| Next of kin | Mother, Mrs Margaret Jane Costello, Frederick Street, Albany, Western Australia |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 28th Battalion, 2nd Reinforcement |
| AWM Embarkation Roll number | 23/45/2 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A64 Demosthenes on |
| Rank from Nominal Roll | Lance Corporal |
| Unit from Nominal Roll | 28th Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brother: 3640 Corporal Martin Joseph COSTELLO, Australian Army Ordnance Corps, effective abroad (still overseas). |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |