| Regimental number | 1836 |
| Place of birth | Granville New South Wales |
| Religion | Church of England |
| Occupation | Plumber |
| Address | 34 Belgrade Street, Manly, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Next of kin | Father, R S Dethrick, 34 Belgrade Street, Manly, New South Wales |
| Enlistment date | 8 February 1915 |
| Rank on enlistment | Acting Sergeant |
| Unit name | 2nd Australian General Hospital, Special Reinforcements |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A55 Kyarra on 16 August 1915 |
| Rank from Nominal Roll | Corporal |
| Unit from Nominal Roll | No. 1 Australian Casualty Clearing Station |
| Fate | Returned to Australia 6 May 1919 |
| Family/military connections | Brother: 1835 Lance Corporal John Samuel DETHICK, No. 1 Australian Casualty Clearing Station, returned to Australia, 6 May 1919. |