| Regimental number | 927 |
| Place of birth | Stockton, New South Wales |
| School | St Stanislaus College, Bathurst, NSW (Catholic) |
| Other training | Sydney University |
| Religion | Roman Catholic |
| Occupation | Accountant |
| Address | Stockton, New South Wales |
| Marital status | Single |
| Age at embarkation | 27 |
| Next of kin | Father, Michael Callen, Stockton Street, Stockton, New South Wales |
| Enlistment date | |
| Rank on enlistment | LSGT |
| Unit name | 34th Battalion, C Company |
| AWM Embarkation Roll number | 23/51/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A20 Hororata on |
| Regimental number from Nominal Roll | Commissioned |
| Rank from Nominal Roll | Lieutenant |
| Unit from Nominal Roll | 34th Battalion |
| Fate | Killed in Action |
| Place of death or wounding | Thailles Wood, near Bray, Somme, France |
| Age at death | 29 |
| Age at death from cemetery records | 29 |
| Place of burial | Beacon Cemetery (Plot VI, Row G, Grave No. 5), Sailly-Laurette, France |
| Panel number, Roll of Honour, Australian War Memorial | 123 |
| Miscellaneous information from cemetery records | Parents: Michael and Ellen CALLEN, "Salopia", Stockton, Newcastle, New South Wales |
| Medals |
Military Medal Source: 'Commonwealth Gazette' No. 219 Date: |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |