| Regimental number | 4410 |
| Date of birth | |
| Place of birth | Savernake, New South Wales |
| Religion | Roman Catholic |
| Occupation | Farm hand |
| Marital status | Single |
| Age at embarkation | 18 |
| Next of kin | Father, Michael Joseph Dwyer, Savernake PO, Savernake, New South Wales |
| Enlistment date | |
| Place of enlistment | Melbourne, Victoria |
| Rank on enlistment | Private |
| Unit name | 21st Battalion, 11th Reinforcement |
| AWM Embarkation Roll number | 23/38/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board RMS Orontes on |
| Miscellaneous details (Nominal Roll) | crossed out on NR |
| Other details |
War service: Egypt, Western Front Medals: British War Medal, Victory Medal |
| Miscellaneous details | True name: Michael Joseph O'CALLAGHAN. True place of birth: Pine Lodger, nr Shepparton, Victoria. True age at enlistment: 16. |
| Date of death | |
| Age at death | 60 |
| Place of burial | Dunnolly Cemetery, Victoria |
| Sources | NAA: B2455, DWYER Michael Thomas |