| Regimental number | 3049 |
| Place of birth | Paddington New South Wales |
| Religion | Roman Catholic |
| Occupation | Clerk |
| Address | 'Glenroy', Neilson Avenue, Kogarah, Sydney, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Mother, Mrs M A Cottier, 'Glenroy', Neilson Avenue, Kogarah, Sydney, New South Wales |
| Enlistment date | 9 August 1915 |
| Rank on enlistment | Acting Sergeant |
| Unit name | 19th Battalion, 7th Reinforcement |
| AWM Embarkation Roll number | 23/36/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A29 Suevic on 20 December 1915 |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | 55th Battalion |
| Fate | Returned to Australia 1 February 1918 |
| Family/military connections | Brother: 3050 Corporal Walter Charles COTTIER, 55th Bn, returned to Australia, 10 May 1919. |
