| Date of birth | |
| Religion | Presbyterian |
| Occupation | Medical practitioner |
| Address | Warrnambool, Victoria |
| Marital status | Single |
| Age at embarkation | 52 |
| Next of kin | Brother, Dr. C M MacKnight, Urana, New South Wales |
| Enlistment date | |
| Rank on enlistment | Major (Medical Officer) |
| Unit name | 4th Light Horse Regiment, Headquarters |
| AWM Embarkation Roll number | 10/9/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board Transport A18 Wiltshire on |
| Rank from Nominal Roll | Lieutenant-Colonel |
| Unit from Nominal Roll | Australian Army Medical Corps |
| Promotions |
Major Unit: MED MO LH4 Promotion date: Lieutenant Colonel Unit: MED AGH3 Promotion date:
Unit: Fld Amb 6 |
| Fate | Returned to Australia |