| Regimental number | 701 |
| Place of birth | Newcastle, New South Wales |
| School | St Mary's, Newcastle, New South Wales |
| Religion | Roman Catholic |
| Occupation | Blacksmith |
| Address | Railway Station, Fassifern, New South Wales |
| Marital status | Single |
| Age at embarkation | 23 |
| Height | 5' 10" |
| Weight | 158 lbs |
| Next of kin | Father, William James Cotter, Railway Station, Fassifern, New South Wales |
| Previous military service | Nil |
| Enlistment date | |
| Date of enlistment from Nominal Roll | |
| Place of enlistment | Liverpool, New South Wales |
| Rank on enlistment | Sergeant |
| Unit name | 7th Light Horse Regiment, 2nd Reinforcement |
| AWM Embarkation Roll number | 10/12/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A12 Saldanha on |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | 7th Light Horse Regiment |
| Fate | Killed in Action |
| Place of death or wounding | Gallipoli, Turkey |
| Age at death | 22 |
| Age at death from cemetery records | 22 |
| Place of burial | Shrapnel Valley Cemetery (Plot III, Row D, Grave No. 37), Anzac, Gallipoli |
| Panel number, Roll of Honour, Australian War Memorial | 5 |
| Miscellaneous information from cemetery records | Parents: William and Rose COTTER, Fassifern, New South Wales. |
| Other details |
War service: Egypt, Gallipoli Proceeded to join Mediterranean Expeditionary Force, Gallipoli, 15 May 1915. Killed in action, Gallipoli, 28 June 1915; buried, 29 June 1915. Medals: 1914-15 Star, British War Medal, Victory Medal |
| Sources | NAA: B2455, COTTER Augustine |