| Regimental number | 106 |
| Date of birth | |
| Religion | Church of England |
| Occupation | Civil engineer |
| Address | Bridgetown, Western Australia |
| Marital status | Single |
| Age at embarkation | 29 |
| Height | 5' 11.25" |
| Weight | 161 lbs |
| Next of kin | Father, F S Drake Brockman, Bridgetown, Western Australia |
| Enlistment date | |
| Rank on enlistment | Private |
| Unit name | 10th Light Horse Regiment, A Squadron |
| AWM Embarkation Roll number | 10/15/1 |
| Embarkation details | Unit embarked from Fremantle, Western Australia, on board HMAT A47 Mashobra on |
| Rank from Nominal Roll | Major |
| Unit from Nominal Roll | 3rd Divisional Engineers |
| Medals |
Military Cross Source: 'Commonwealth Gazette' No 169 Date: |
| Discharge date | |
| Other details |
War service: Egypt, Gallipoli, Western Front Wounded in action (gun shot wound, neck), 21 September 1915. Commenced return to Australia on board HT 'Mantua' (date not recorded on Nominal Roll); appointment terminated (discharged), 8 May 1920.Medals: Military Cross, 1914-15 Star, British War Medal, Victory Medal Also served in World War II: Service No WX29243. |
| Date of death | |
| Age at death | 92 |
| Sources | NAA: Series B884, BROCKMAN Geoffrey Drake |