High Quality Content by WIKIPEDIA articles! The Royal Australian Engineers (RAE) is a corps of the Australian Army (although the word corps does not appear in their name or on their badge). The RAE is ranked fourth in seniority of the corps of the Australian Army, behind the Staff Cadets, Armoured and Artillery Corps. The Corps was formed by the amalgamation of the various colonial engineer corps of the States and territories of Australia in 1902 and since then has served in various conflicts including World War I, World War II and the Vietnam War. The Corps has also served on numerous peacekeeping operations and is currently involved in the Australian contribution to the war in Afghanistan.