Commemorated at Memorial Name Fern Hill Public School and Residents First World War Honour Roll Inverell Given name O Family name Olsen Gender Male Service number 999 Conflicts First World War, 1914–18 Additional information Last held rank Sergeant Unit at embarkation 8th Training Squadron Australian Flying Corps 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