| Regimental number | 1255 |
| Place of birth | Longreach Queensland |
| Religion | Roman Catholic |
| Occupation | Clerk |
| Address | Eagle Street, Longreach, Queensland |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Father, Jeremiah McCarthy, Eagle Street, Longreach, Queensland |
| Enlistment date | 28 August 1915 |
| Rank on enlistment | Private |
| Unit name | 11th Light Horse Regiment, 6th Reinforcement |
| AWM Embarkation Roll number | 10/16/2 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A24 Benalla on 27 October 1915 |
| Rank from Nominal Roll | Driver |
| Unit from Nominal Roll | 11th Field Artillery Brigade |
| Fate | Returned to Australia 1 May 1919 |
| Miscellaneous details (Nominal Roll) | *given name two spellings Dennis and Denis |
