| Regimental number | 119 |
| Place of birth | Magill South Australia |
| Religion | Methodist |
| Occupation | Butcher |
| Address | Lorne Avenue, Magill, South Australia |
| Marital status | Single |
| Age at embarkation | 25 |
| Next of kin | Father, W.D. Cosgrove, Lorne avenue, Magill, South Australia |
| Enlistment date | 19 August 1914 |
| Rank on enlistment | Private |
| Unit name | 3rd Light Horse Regiment, A Squadron |
| AWM Embarkation Roll number | 10/8/1 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A17 Port Lincoln on 22 October 1914 |
| Rank from Nominal Roll | Lance Sergeant |
| Unit from Nominal Roll | 15th Light Horse Regiment |
| Fate | Returned to Australia 7 January 1919 |
| Family/military connections | Brothers: 7285 Pte Harold Donald COSGROVE, 53rd Bn, returned to Australia, 9 December 1918; 3281 Pte Leslie George COSGROVE, 50th Bn, killed in action, 13 October 1917. |
