| Regimental number | 866 |
| Religion | Roman Catholic |
| Occupation | Labourer |
| Address | 35 Phillis Street, Maylands, Adelaide, South Australia |
| Marital status | Single |
| Age at embarkation | 28 |
| Next of kin | Mother, Mrs B Gallaher, 35 Phillis Street, Maylands, Adelaide, South Australia |
| Enlistment date | 28 December 1914 |
| Date of enlistment from Nominal Roll | 31 December 1914 |
| Rank on enlistment | Private |
| Unit name | 1st Light Horse Regiment, 4th Reinforcement |
| AWM Embarkation Roll number | 10/6/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A9 Shropshire on 17 March 1915 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 1st Light Horse Regiment |
| Fate | Returned to Australia 31 August 1916 |
| Miscellaneous details (Nominal Roll) | *Stated to be Michael Patrick Gallaher on NR |