| Regimental number | 320 |
| Place of birth | Ballarat Victoria |
| Religion | Presbyterian |
| Occupation | Sheep farmer |
| Address | Artillery Barracks, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 26 |
| Next of kin | Father, A McCook, Chepstowe, Ballarat, Victoria |
| Previous military service | Royal Australian Garrison Artillery |
| Enlistment date | |
| Rank on enlistment | Gunner |
| Unit name | Siege Artillery Brigade |
| AWM Embarkation Roll number | 13/49/1 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A67 Orsova on |
| Rank from Nominal Roll | Gunner |
| Unit from Nominal Roll | 36th Heavy Artillery Group |
| Other details from Roll of Honour Circular | Parents: Archibald (d. 28 April 1925, aged 86; bu. Linton) and Frances Ann (d. 6 January 1942, aged 93; bu. Linton) McCOOK |
| Fate | Returned to Australia |
| Family/military connections | Brother: 2007 Pte Gordon Eric McCOOK, 3rd Light Horse Regiment, died of wounds, 23 August 1916. |
| Other details |
Medals: 1914-15 Star, British War Medal, Victory Medal |
| Date of death | |
| Age at death | 45 |
| Place of burial | Linton Cemetery, Victoria |