| Regimental number | 3586 |
| Date of birth | |
| Place of birth | Sydney, New South Wales |
| School | Kogarah Public School, New South Wales |
| Religion | Church of England |
| Occupation | Salesman |
| Address | 'Rosemount', Wallace Street, Kogarah, New South Wales |
| Marital status | Single |
| Age at embarkation | 21 |
| Height | 5' 9" |
| Weight | 145 lbs |
| Next of kin | Father, J G O'Donnell, 'Rosemount', Wallace Street, Kogarah, New South Wales |
| Previous military service | Served for 3 years in the Senior Cadets; permanent exception, eyesight deficient. |
| Enlistment date | |
| Place of enlistment | Holsworthy, New South Wales |
| Rank on enlistment | Private |
| Unit name | 19th Battalion, 8th Reinforcement |
| AWM Embarkation Roll number | 23/36/2 |
| Embarkation details | Unit embarked from Sydney, New South Wales, on board HMAT A35 Berrima on |
| Rank from Nominal Roll | Private |
| Unit from Nominal Roll | 54th Battalion |
| Fate | Killed in Action |
| Age at death from cemetery records | 22 |
| Place of burial | No known grave |
| Commemoration details | V.C. Corner (Panel No 11), Australian Cemetery Memorial, Fromelles, France |
| Panel number, Roll of Honour, Australian War Memorial | 159 |
| Miscellaneous information from cemetery records | Parents: John and Elizabeth O'DONNELL, 'Rosenmount', West Kogarah, New South Wales |
| Family/military connections | Brothers: 288 Pte Harold Gordon O'DONNELL, 5th Company, Machine Gun Corps, died of wounds, 21 June 1917; Captain John Layman O'DONNELL, 18th Bn, returned to Australia, 13 March 1918. |
| Other details |
War service: Egypt, Western Front Allotted to and proceeded to 54th Bn from 5th Training Bn, Zeitoun, 14 February 1916; joined 54th Bn, Tel el Kebir, 16 February 1916. Admitted to No 15 Field Ambulance, Ferry Post, 19 April 1916 (influenza); discharged to duty and rejoined unit, 22 April 1916. Embarked Alexandria to join the British Expeditionary Force, 19 June 1916; disembarked Marseilles, France, 29 June 1916. Posted missing, 20 July 1916. Now, 28 July 1916, reported as 'Killed in Action, 20 July 1916'. Note, Red Cross File No 2040108: 'No trace Germany. Cert by Capt. Mills. 10.10.19.' Medals: British War Medal, Victory Medal |
| Sources | NAA: B2455, O'DONNELL Alexander Thomas
Red Cross file 2040108 |