| Regimental number | 3520 |
| Place of birth | Morgan, South Australia |
| School | Morgan Public School, South Australia |
| Religion | Church of England |
| Occupation | Blacksmith |
| Address | Waterloo, South Australia |
| Marital status | Single |
| Age at embarkation | 26 |
| Next of kin | Brother, Edgar Herbert Bruhn, Farrel's Flat, South Australia |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 32nd Battalion, 8th Reinforcement |
| AWM Embarkation Roll number | 23/49/2 |
| Embarkation details | Unit embarked from Adelaide, South Australia, on board HMAT A70 Ballarat on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 32nd Battalion |
| Other details from Roll of Honour Circular | d. Weymouth, England |
| Fate | Died of disease |
| Miscellaneous details (Nominal Roll) | *Gustav spelt Gustive |
| Age at death | 29 |
| Age at death from cemetery records | 18 |
| Place of burial | Melcombe Regis Cemetery (Plot III, Row C, Grave No. 2592), Dorset |
| Panel number, Roll of Honour, Australian War Memorial | 120 |
| Miscellaneous information from cemetery records | Brother of Richard BRUHN, Williaston, Gawler, South Australia. Born at Waterloo, South Australia |