| Regimental number | 512 |
| Place of birth | Armidale New South Wales |
| Religion | Presbyterian |
| Occupation | Motor machinist |
| Address | C/o Mr F Rizon, Duri, New South Wales |
| Marital status | Single |
| Age at embarkation | 23 |
| Next of kin | Mother, Mrs McLachlan, Metz via Armidale, New South Wales |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 34th Battalion, B Company |
| AWM Embarkation Roll number | 23/51/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A20 Hororata on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 34th Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brother: 513 Sergeant Daniel MCLACHLAN, 12th Light Horse Regiment, returned to Australia, 1 January 1919 |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |