Known as the 118 General Hospital it was planned as a hospital centre of five hospitals consisting of 490 timber barracks-type buildings, which could house a total of 4,250 beds and accommodate up to 1,250 patients and 3,500 staff.
The U.S. Army vacated the hospital in 1945 and the Royal Navy occupied many of the buildings in January 1945 and the Australian Army used the remainder of the other buildings.
After World War II the site passed to the New South Wales Housing Commission from March 1946 and the huts were used to ease the post-war housing shortage.
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Many streets in Riverwood remain named after U.S. places, such as Kentucky Road, Michigan Road, Roosevelt Avenue, and Washington Avenue.