| Regimental number | 1104 |
| Place of birth | Surrey, England |
| School | "Tiffines" (?), Kingston on Thames, England |
| Age on arrival in Australia | 17 |
| Religion | Church of England |
| Occupation | Sleeper hewer |
| Address | Smith's Mill PO, Smith's Mill, Western Australia |
| Marital status | Single |
| Age at embarkation | 19 |
| Next of kin | Father, A L Bullen, Smith's Mill PO, Smith's Mill, Western Australia |
| Previous military service | Served as a 2nd Lieutenant, Senior Cadets, Perth, Wa. |
| Enlistment date | |
| Rank on enlistment | Sergeant |
| Unit name | 11th Battalion, 1st Reinforcement |
| AWM Embarkation Roll number | 23/28/2 |
| Embarkation details | Unit embarked from Melbourne, Victoria, on board HMAT A32 Themistocles on |
| Rank from Nominal Roll | Sergeant |
| Unit from Nominal Roll | 11th Battalion |
| Fate | Killed in Action |
| Miscellaneous details (Nominal Roll) | *Marens spelt Marcus |
| Place of death or wounding | Gallipoli, Turkey |
| Date of death | |
| Age at death | 20 |
| Other details |
War service: Egypt, Gallipoli Medals: 1914-15 Star, British War Medal, Victory Medal |