| Regimental number | 1238 |
| Place of birth | Dungog, New South Wales |
| Religion | Presbyterian |
| Occupation | Plumber |
| Address | Dungog, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Height | 5' 4.25" |
| Weight | 138 lbs |
| Next of kin | Mother, Mrs J Forster, Bandon Grove, Dungog, New South Wales |
| Previous military service | Served for 1 year in the Australian Light Horse, Citizen Military Forces. |
| Enlistment date | |
| Place of enlistment | Liverpool, New South Wales |
| Rank on enlistment | Private |
| Unit name | October 1916 Reinforcements |
| AWM Embarkation Roll number | 11/14/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A43 Barunga on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 14th Light Horse Regiment |
| Fate | Returned to Australia |
| Discharge date | |
| Family/military connections | Brother: 1384 Pte Samuel Edwin FORSTER, 35th Bn, killed in action, 25 May 1917. |
| Other details |
War service: Egypt, Palestine Commenced return to Australia from Kantara on board Ht 'Derbyshire', 24 July 1919; discharged (termination of period of enlistment), Sydney, 17 October 1919. Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, FORSTER Arthur William |