| Religion | Presbyterian |
| Occupation | Grazier |
| Address | Thane via Warwick, Queensland |
| Marital status | Single |
| Age at embarkation | 31 |
| Next of kin | Father, James Costello, Thane via Warwick, Queensland |
| Previous military service | 14th Australian Light Horse |
| Enlistment date | |
| Rank on enlistment | Lieutenant |
| Unit name | 11th Light Horse Regiment, A Squadron |
| AWM Embarkation Roll number | 10/16/1 |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A7 Medic on |
| Embarkation details | Unit embarked from Brisbane, Queensland, on board HMAT A30 Borda on |
| Recommendations (Medals and Awards) |
Mention in Despatches Awarded, and promulgated,'London Gazette' No 31938 (11 June 1920); 'Commonwealth Gazette' No 72 (2 September 1920). |
| Medals |
Distinguished Service Order 'At Semakh, on the 25th September, 1918, he was in command of one of the squadrons that charged the enemy's position covering the east and southern part of the twon. His dash and energy went a long way to make the atack a success. After going through the enemy's lines they still resisted under covering fire from machine guns placed in the twon, but he collected his men - who were under fire at point blank range of an enemy 12 pounder gun - and dismounted them for a bayonet charge. This gun was subseqeuently captured, together with a machine gun. After losing two officers and having his horse shot under him, he beat off a counter attack.'
Source: 'Commonwealth Gazette' No. 10 Date: |
| Other details |
War service: Middle East Medals: Distinguished Service Order, 1914-15 Star, British War Medal, Victory Medal |