| Regimental number | 20931 |
| Date of birth | |
| Place of birth | Doyleston, Canterbury |
| Religion | Presbyterian |
| Occupation | Engine driver |
| Marital status | Single |
| Age at embarkation | 25 |
| Height | 5' 10" |
| Weight | 166 lbs |
| Next of kin | Mother, Mrs A McLachlan, Doyleston, Canterbury |
| Previous military service | Nil |
| Enlistment date | |
| Place of enlistment | Trentham |
| Rank on embarkation | Quartermaster Sergeant |
| Unit name | New Zealand Expeditionary Force, 19th Reinforcements, Otago Infantry Battalion, D Company |
| Embarkation details | Unit embarked from Wellington on |
| The Infantry component of the 19th Reinforcements left New Zealand on board two ships, 'Maunganui' and 'Tahiti'. It is not possible from the Nominal Rolls to determine on which ship an individual embarked. | |
| Final rank | Sergeant |
| Final unit | 1st Battalion, Otago Infantry Regiment |
| Fate | Killed in Action |
| Age at death from cemetery records | 26 |
| Place of burial | Tyne Cot Cemetery (Plot XII, Row F, Grave No 7), near Ieper, Belgium |
| Miscellaneous information from cemetery records | Parents: Archie and Mary C McLachlan, Hazelburn, Dolyeston, Canterbury |
| Other details |
War service: Western Front Embarked Wellington, 15 November 1916; disembarked Devonport, England, 29 January 1917, and marched into Sling Camp, and reverted to Temporary Sergeant. Promoted Corporal and retained rank, and then relinquished rank, of Temporary Sergeant, 1 March 1917. Proceeded overseas to France, 1 March 1917; joined 1st Bn, Otago Infantry Regiment, in ther field, 21 May 1917, and posted to 14th Company. Appointed Temporary Sergeant, 30 July 1917. Detached to 2nd Brigade demonstration Platoon, 11 August 1917. Promoted Sergeant, 29 September 1917. Killed in action, 12 October 1917. Medals: British War Medal, Victory Medal |
| Sources | Nominal Roll Vol. 2: Roll 45, p. 13 Archives New Zealand (Wellington), Agency AABK, Series 18805, File 10925790 |