Simpson Barracks is an Australian Army facility in the suburb of Yallambie in Melbourne, Victoria, Australia. Simpson Barracks is home to the DFSS (Defence Force School of Signals), Financial Services Unit, Defence Force School of Music, Land Warfare Centre and the headquarters of 4th Brigade. It also has depots for 4th/19th Prince of Wales's Light Horse Regiment and 108th Signals Squadron. It also is the main workshop for 105 Field Workshop (RAEME). It also houses the Victorian Headquarters for the Australian Army Cadets, and 39 Army Cadet Unit Watsonia.