| Regimental number | 2259 |
| Place of birth | Walhalla Victoria |
| Religion | Baptist |
| Occupation | Baptist minister |
| Address | Dubbo, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Brother, Aubrey Yarra, 34 Epsom Road, Kensington, Victoria |
| Enlistment date | 25 February 1916 |
| Rank on enlistment | Private |
| Unit name | 13th Light Horse Regiment, 17th Reinforcement |
| AWM Embarkation Roll number | 10/18/3 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A11 Ascanius on 11 May 1917 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 10th Field Artillery Brigade |
| Fate | Returned to Australia 21 March 1919 |
| Miscellaneous details (Nominal Roll) | *Spelt Merwyn Francis Yarra on NR |
