
| Regimental number | 1135A |
| Place of birth | Brisbane, Queensland |
| School | State School, Queensland |
| Religion | Church of England |
| Occupation | Stockman |
| Address | Wallumbilla, Queensland |
| Marital status | Single |
| Age at embarkation | 33 |
| Next of kin | Brother, Francis Mullen, Camden Street, Albion, Brisbane, Queensland |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 42nd Battalion, C Company |
| AWM Embarkation Roll number | 23/59/1 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A30 Borda on |
| Regimental number from Nominal Roll | 1136 |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 42nd Battalion |
| Fate | Killed in Action |
| Place of death or wounding | Messines, Belgium |
| Age at death | 40 |
| Age at death from cemetery records | 40 |
| Place of burial | Bethlehem Farm East Cemetery (Row A, Grave No. 4), Messines, Belgium |
| Panel number, Roll of Honour, Australian War Memorial | 135 |
| Miscellaneous information from cemetery records | Parents: Francis and Marion MULLEN |
| Other details |
War service: Western Front Medals: British War Medal, Victory Medal |