| Regimental number | 1995 |
| Place of birth | Cassilis, New South Wales |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | Pembroke, Casillis, New South Wales |
| Marital status | Single |
| Age at embarkation | 18 |
| Height | 5' 5.5" |
| Weight | 135 lbs |
| Next of kin | Father, Davis Joseph Callaghan, Pembroke, Casillis, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Newcastle, New South Wales |
| Rank on enlistment | Private |
| Unit name | 30th Battalion, 3rd Reinforcement |
| AWM Embarkation Roll number | 23/47/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A70 Ballarat on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 30th Battalion |
| Fate | Killed in Action |
| Place of death or wounding | Fleurbaix, France |
| Age at death from cemetery records | 19 |
| Place of burial | No known grave |
| Commemoration details | V.C. Corner (Panel No 2), Australian Cemetery Memorial, Fromelles, France |
| Panel number, Roll of Honour, Australian War Memorial | 116 |
| Miscellaneous information from cemetery records | Parents: David and Ester CALLAGHAN, Coolie Cottage, Merriwa, New South Wales. Native of Cassilis |
| Other details |
War service: Egypt, Western Front Embarked Sydney, 16 February 1916; disembarked Suez, 23 March 1916. Embarked Alexandria to join the British Expeditionary Force, 16 June 1916; disembarked Marseilles, France, 23 June 1916. Killed in action, 20 July 1916. Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, CALLAGHAN John Patrick |
Postal Address:
Po Box 7916
Canberra BC 2610, Australia
Street Address:
Northcott Drive,
Campbell, ACT 2600
