Commemorated at Memorial Name Orange High School First World War Roll of Honour (LOST) Given name Arnold Family name Caldwell Gender Male Service number 15775 Conflicts First World War, 1914–18 Additional information Address given on enlistment documents Last held rank Sapper Unit at embarkation 14th Field Company Engineers 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