Breddan airfield, located about 13km north of Charters Towers on the Gregory Developmental Road, was constructed during April 1942. Initially occupied by two squadrons of the US 38th Bombardment Group, the airfield later became a major RAAF aircraft repair and salvage depot. The bitumen east-west Runway 60 degrees extends east of the Gregory Developmental Road, while the unfinished north-south Runway 20 degrees remains evident, running parallel to the road. Taxiways extend north and west from Runway 60 to workshop sites, marked by concrete slabs, of the Airframe Repair Section (ARS), located west of the Gregory Developmental Road near the west end of Runway 60; the General Engineering Section (GES), located between Runway 60 and Runway 20; and the Engine Repair Section (ERS), located north of the GES. Two other ERS workshop floor surfaces are located west of the Gregory Developmental Road. The duty pilot’s tower footings are located near the junction of the two runways. About 500m north of Runway 60 towards its eastern end is a reinforced concrete building (10.9m by 8m). The Torpedo Maintenance Unit (TMU) stores southwest of the east end of Runway 60 include ten reinforced concrete igloos. The site of No.1 Camp extends north from the east end of Runway 60, and includes remnants of an open air picture theatre. Number 2 camp was south of the west end of Runway 60, while a WAAAF camp was south of the centre of Runway 60. Camp 3 (or the TMU camp) was southeast of the east end of Runway 60, towards the TMU storage igloos, and contains a small concrete generator igloo.The site of the Motor Transport Section is located south of Runway 60, at the entrance to the airfield. A concrete power house (16.2m by 6m) and hospital foundations are located east of the Motor Transport Section.