The British Navy established a naval installation known as HMS JUFFAIR on April 13, 1935 in the area where ASU-SWA is located today. In 1950, the United States Navy leased office space aboard HMS JUFFAIR from the British. In 1971, after their treaty expired, the British left Bahrain, granting the island total independence. The United States, through agreement with the Bahraini government, took over part of HMS JUFFAIR, renaming it Administrative Support Unit Bahrain.