Commemorated at Memorial Name Barraba First World War 33rd Battalion Soldiers Memorial Given name Donal Family name O'Brien Gender Male Service number 1895 Conflicts First World War, 1914–18 Additional information Last held rank Corporal Unit at embarkation 33rd Australian Infantry Battalion Service Australian Army - First Australian Imperial Force (1st AIF) Do you know more about this war Veteran? Click here to learn how you can contribute