| Regimental number | 2655 |
| Place of birth | Blakeston South Australia |
| Religion | Roman Catholic |
| Occupation | Farmer |
| Address | Morawa, Western Australia |
| Marital status | Married |
| Age at embarkation | 41 |
| Next of kin | Wife, Mrs Olive Katherine Valentine, Morawa, Western Australia |
| Enlistment date | 13 March 1916 |
| Date of enlistment from Nominal Roll | 7 March 1916 |
| Rank on enlistment | Private |
| Unit name | 10th Light Horse Regiment, 18th Reinforcement |
| AWM Embarkation Roll number | 10/15/3 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board RMS Morea on 6 June 1916 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 1st Imperial Camel Brigade |
| Fate | Returned to Australia 23 August 1917 |
| Miscellaneous details (Nominal Roll) | *Spelt Sidney MacKenzie Valentine on NR |
