| Regimental number | 6405 |
| Place of birth | Cowes, England |
| Religion | Church of England |
| Occupation | Watchmaker |
| Address | Port Hedland, Western Australia |
| Marital status | Single |
| Age at embarkation | 26 |
| Next of kin | Father, C F Clark, Laura Cottage, Bayford, Wincantin, Somerset, England |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 27th Battalion, 18th Reinforcement |
| AWM Embarkation Roll number | 23/44/4 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A35 Berrima on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 27th Battalion |
| Fate | Returned to Australia |
| Family/military connections | Brother: 6562 Pte Percival Harry CLARK, 28th Bn, killed in action, 28 October 1917. |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |