| Regimental number | 397 |
| Place of birth | Wagunyah, Victoria |
| Religion | Church of England |
| Occupation | Stockman |
| Address | Boree Creek via Lockhart, New South Wales |
| Marital status | Single |
| Age at embarkation | 24 |
| Next of kin | Mrs A D Cairnes, 12 Hamilton Street, Subiaco, Western Australia |
| Enlistment date | 24 August 1914 |
| Rank on enlistment | Driver |
| Unit name | Field Artillery Brigade 1, Battery 3 |
| AWM Embarkation Roll number | 13/29/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board Transport A8 Argyllshire on 18 October 1914 |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | 1st Field Artillery Brigade |
| Fate | Returned to Australia 16 July 1917 |
| Miscellaneous details (Nominal Roll) | *Spelt Harry Montgomery Cairnes on NR |
