Commemorated at Memorial Name Wellington Council First World War Hall of Memory Given name H J Family name O'Brien Gender Male Service number 85 Conflicts First World War, 1914–18 Campaign Somme 1918 Fate Killed in action (KIA) Fate date 29 September 1918 Additional information Last held rank Sergeant Unit at embarkation 3rd Machine Gun 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