| Regimental number | 3157 |
| Date of birth | 6 February 1889 |
| Place of birth | Bega, New South Wales |
| School | Bega, New South Wales |
| Religion | Roman Catholic |
| Occupation | Carter |
| Address | Bryant Street, Rockdale, New South Wales |
| Marital status | Single |
| Age at embarkation | 27 |
| Next of kin | Father, M Breen, Bryant Street, Rockdale, New South Wales |
| Enlistment date | 14 March 1917 |
| Rank on enlistment | Private |
| Unit name | 1st Light Horse Regiment, 24th Reinforcement |
| AWM Embarkation Roll number | 10/6/5 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A42 Boorara on 10 May 1917 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 1st Light Horse Regiment |
| Fate | Returned to Australia 13 March 1919 |
| Family/military connections | Brother: Private Frederick L Breen, 3rd Battalion |
| Other details | Service in Egypt and Palestine |
| Date of death | 12 May 1950 |
| Place of burial | Macquarie Park Cemetery |
