arrangements in the southern region. Allied Forces Mediterranean was disbanded on 5 June 1967, and all forces in the south and the Mediterranean were assigned to AFSOUTH. AFSOUTH continued to conduct exercises in the 1960s and 1970s, among which was exercise 'Dawn Patrol,' a five-nation naval and air exercise conducted throughout the Mediterranean in 1974. The U.S. contribution to the exercise was based on the USS America carrier battle group. During the 1960s Exercise Deep Furrow appears to have been held annually. Deep Furrow was to be conducted from 20–29 September 1973 in the southern region of Allied Command Europe. Forces from Greece, Turkey and other countries in AF South Command were to participate, which is scheduled annually by CINCSOUTH. Land forces will hold maneuvers in Greek and Turkish Thrace, and naval Force will exercise in the Eastern Mediterranean, including the Aegean Sea; naval activities will include amphibious and carrier operations. As part of the exercise, ground units will be airlifted from their home stations in the United Kingdom and the United States to northwestern Turkey, where Turkish National Forces will execute plans for receiving them. Turkish National Forces will also conduct operations with Hellenic Armed Forces and NATO air units, providing fighter-bomber and reconnaissance support throughout the area of operations. Highlights of the exercise in Turkish Thrace will be a multi-national amphibious landing on 25 September 1973 and a multinational airborne operation on 26 September 1973. From 1967 the overall shape of AFSOUTH did not significantly change until the command was renamed in 2004. There were five principal subordinate commands (PSCs). The number rose to six when Greece was taking part in the military structure; Greece withdrew from the NATO military structure after the Turkish invasion of Cyprus in 1974, and after some behind the scenes negotiating by NATO officials, returned in October 1980. Two land commands, Allied Land Forces Southern Europe and Allied Land Forces Southeastern Europe, were tasked to defend Italy and Turkey, respectively. Each was directly responsible to Commander-in-Chief, AFSOUTH, and supported by a tactical air force, Fifth Allied Tactical Air Force in Italy and Sixth Allied Tactical Air Force in Turkey. The two allied tactical air forces were under an overall air command, Allied Air Forces Southern Europe, headquartered at Naples in Italy under a United States Air Force officer, ComAirSouth, responsible himself to CinCAFSOUTH. ComAirSouth held the U.S. national appointment of Commander Sixteenth Air