| Regimental number | 876 |
| Place of birth | Port Augusta South Australia |
| Religion | Church of England |
| Occupation | Labourer |
| Address | Adelaide, South Australia |
| Marital status | Married |
| Age at embarkation | 23 |
| Next of kin | Wife, Mrs. Florence Margery Rosser, Jervis Street, Port Augusta, South Australia |
| Enlistment date | 14 December 1914 |
| Rank on enlistment | Private |
| Unit name | 3rd Light Horse Regiment, 14th Reinforcement |
| AWM Embarkation Roll number | 10/8/3 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A69 Warilda on 10 February 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 3rd Light Horse Regiment |
| Fate | Returned to Australia 12 July 1918 |
| Miscellaneous details (Nominal Roll) | *Spelt Oscar Hairnes Rosser on NR |
| Date of death | 4 September 1961 |
| Place of burial | Rookwood Necropolis |