to
Edo Prehistoric and ancient history The prehistoric history of Okinawa differs significantly from that of mainland Japan. Prior to written records, it is generally divided into two periods:
the Paleolithic era and
the Shellmidden period (Kaizuka period). The earliest evidence of human activity in Okinawa includes the
Yamashita Cave Man, dating back approximately 32,000 years, and the
Minatogawa Man from around 18,000 years ago. The
Shellmidden Period in Okinawa roughly corresponds to the
Jōmon through
Heian periods of mainland
Japan, with a chronological gap of about 10,000 years from the Paleolithic era. At the
Kogachibaru Shell Mound, archaeological findings include pottery styles such as
Sobata and
Ichiki, which originate from the
Kyushu region, obsidian from
Koshidake in
Saga Prefecture, and jade from
Itoigawa in
Niigata Prefecture used for ornamental pendants. These discoveries indicate that close exchanges with
Kyushu were already taking place during this time. However, by the middle of the
Shellmidden Period, Okinawan pottery began to exhibit clearly localized characteristics. Examples include the Iha and Ogido pottery styles, which are distinct to the region.
Gusuku and Sanzan periods From the 12th century onward, Okinawa entered the
Gusuku period, characterized by the development of an
agrarian society. During this time, populations moved from coastal dunes to more fertile limestone plateaus, leading to significant population growth and the beginnings of international trade. In the mid-17th century, the Ryukyuan reformer
Haneji Chōshū implemented significant political and social reforms promoting pro-Japanese policies. Many Okinawans migrated to mainland Japan or abroad. Between 1923 and 1930, Okinawans accounted for 10% of all Japanese emigrants. Remittances from overseas workers contributed 40% to 65% of the prefecture's annual budget. In 1945, Okinawa became the site of the largest ground battle on Japanese soil during the
Pacific War. The
Battle of Okinawa resulted in the deaths of approximately 12,520 American soldiers and an estimated 200,000 Japanese personnel, including military and civilians. The
United States military landed on the coast of Yomitan Village, Okinawa Island, on April 1 and quickly secured control over the northern half of the island. The Japanese forces, facing overwhelming American attacks, retreated to the southern part of the island.
Shuri Castle, which served as the headquarters of the Japanese command, was destroyed, and on June 23, organized resistance ended with the suicide of Lieutenant General Mitsuru Ushijima, the commanding officer of the Okinawan defense forces, and other high-ranking staff at Mabuni. Over approximately three months of intense fighting, a large number of civilians were killed as a result of American
naval bombardment that affected residential areas, extensive
aerial bombing, and the use of flamethrowers against natural caves (gama) and civilian air-raid shelters. Additionally, there were numerous instances of group suicides among civilians, driven in part by fear of American capture. It is estimated that one in four residents of Okinawa perished, and the island was left devastated. After the war, the Nationalist government of China recognized the strategic value of the Ryukyu Islands and proposed a joint trusteeship with the United States for a period of five to ten years. Later proposals included allowing the U.S. to establish bases on some islands, indicating a willingness to compromise and an understanding that the U.S. would not readily transfer sovereignty to China. Chinese domestic opinion was divided: some called for an independent Ryukyuan state, others demanded the full incorporation of the Ryukyus into Chinese territory. Most emphasized the islands' strategic importance as a buffer zone and argued they should not fall into the hands of another power. During the battle of Okinawa, U.S. fleet admiral
Chester Nimitz had issued an order on 5 April 1945, declaring the suspension of the Japanese administration in Okinawa and the establishment of the
United States Military Government of the Ryukyu Islands (USMGR). The
United States Civil Administration of the Ryukyu Islands was later established in 1950 to replace the USMGR, and the U.S. administration of Okinawa was later formalized in 1952, when the
Treaty of San Francisco came into effect.
Continued U.S. military buildup During the
Korean War,
B-29 Superfortresses flew bombing missions over Korea from
Kadena Air Base on Okinawa. The military buildup on the island during the
Cold War increased a division between local inhabitants and the American military. Under the 1952
Treaty of Mutual Cooperation and Security between the United States and Japan,
United States Forces Japan (USFJ) have maintained a large military presence. During the mid-1950s, the U.S. seized land from Okinawans to build new bases or expand currently existing ones. According to the Melvin Price Report, by 1955, the military had displaced 250,000 residents.
Secret U.S. deployment of nuclear weapons Since 1960, the U.S. and Japan have maintained an agreement that allows the U.S. to secretly bring nuclear weapons into Japanese ports. The Japanese people tended to oppose the introduction of nuclear arms into Japanese territory; the Japanese government's assertion of
Japan's non-nuclear policy and a statement of the
Three Non-Nuclear Principles reflected this popular opposition. Most of the weapons were alleged to be stored in ammunition bunkers at Kadena Air Base. Between 1954 and 1972, 19 different types of nuclear weapons were deployed in Okinawa, but with fewer than around 1,000 warheads at any one time. In fall 1960, U.S. commandos in
Green Light Teams secret training missions carried small nuclear weapons on the east coast of Okinawa Island.
Vietnam War in 1969 Between 1965 and 1972, Okinawa was a key staging point for United States in its military operations directed towards North Vietnam. Along with Guam, it presented a geographically strategic launch pad for covert bombing missions over Cambodia and Laos. Anti-
Vietnam War sentiment became linked politically to the movement for reversion of Okinawa to Japan. In 1965, the U.S. military bases, earlier viewed as paternal post war protection, were increasingly seen as aggressive. The Vietnam War highlighted the differences between United States and Okinawa but showed a commonality between the islands and mainland Japan. As controversy grew regarding the alleged placement of nuclear weapons on Okinawa, fears intensified over the escalation of the Vietnam War. Okinawa was perceived by some inside Japan as a potential target for China, should the communist government feel threatened by United States. American military secrecy blocked any local reporting on what was actually occurring at bases such as Kadena Air Base. As information leaked out, and images of air strikes were published, the local population began to fear the potential for retaliation. In a speech delivered in 1967, Oda was critical of Prime Minister
Eisaku Satō's unilateral support of America's war in Vietnam, claiming "Realistically we are all guilty of complicity in the Vietnam War". The U.S. military bases on Okinawa became a focal point for
anti-Vietnam War sentiment. By 1969, over 50,000 American military personnel were stationed on Okinawa.
United States Department of Defense began referring to Okinawa as the "Keystone of the Pacific". This slogan was imprinted on local U.S. military license plates. In 1969, chemicals leaked from the U.S. storage depot at Chibana in central Okinawa, under
Operation Red Hat. Evacuations of residents took place over a wide area for two months. Even two years later, government investigators found that Okinawans and the environment near the leak were still suffering because of the depot. On May 15, 1972, the U.S. government returned the islands to Japan following the signing of the
1971 Okinawa Reversion Agreement.
Post-reversion history (1972–present) The U.S. Marine Corps buried a massive stockpile of Agent Orange at the Futenma air station in Okinawa, seriously sickening the base's former head of maintenance and potentially contaminating nearby residents and the ground beneath the base. The barrels were abandoned in Okinawa at the end of the Vietnam War – when the U.S. government banned the dioxin-laden defoliant for health reasons — and were buried at the installation in the city of Ginowan after the Pentagon ignored repeated requests to safely dispose of them, according to the veterans who served at the installation in the 1970s and 1980s. The
1995 kidnaping, beating, and rape of a 12-year-old girl by three U.S. servicemen triggered widespread protests in Okinawa. Reports by the local media of accidents and crimes committed by U.S. servicemen have reduced the local population's support for the U.S. military bases. A strong emotional response has emerged from certain incidents. Documents declassified in 1997 proved that both tactical and strategic weapons have been maintained in Okinawa. On October 25, 2005, after a decade of negotiations, the governments of the U.S. and Japan officially agreed to move
Marine Corps Air Station Futenma from its location in the densely populated city of
Ginowan to the more northerly and remote
Camp Schwab in
Nago by building a heliport with a shorter runway, partly on Camp Schwab land and partly running into the sea. The move is partly an attempt to relieve tensions between the people of Okinawa and the Marine Corps. Despite Okinawa prefecture constituting only 0.6% of Japan's land surface, in 2006 75% of all USFJ bases were located on Okinawa, occupying 18% of the main island. In a poll conducted by
The Asahi Shimbun in May 2010, 43% of the Okinawan population wanted the complete closure of the U.S. bases, 42% wanted reduction, and 11% wanted to maintain the status quo. Okinawan feelings about the U.S. military are complex. In early 2008, U.S. Secretary of State
Condoleezza Rice apologized after a series of crimes involving American troops in Japan, including the rape of a young girl of 14 by a Marine on Okinawa. The U.S. military imposed a temporary 24-hour curfew on military personnel and their families to ease the anger of local residents. Some cited statistics that the crime rate of military personnel is consistently less than that of the general Okinawan population. However, some criticized the statistics as unreliable, since violence against women is under-reported. Between 1972 and 2009, U.S. servicemen committed 5,634 criminal offenses, including 25 murders, 385 burglaries, 25 arsons, 127 rapes, 306 assaults and 2,827 thefts. Yet, per
Marine Corps Installations Pacific data, U.S. service members are convicted of far fewer crimes than local Okinawans. In 2009, a new Japanese government came to power and froze the U.S. forces relocation plan but in April 2010 indicated their interest in resolving the issue by proposing a modified plan. A study done in 2010 found that the prolonged exposure to aircraft noise around the Kadena Air Base and other military bases cause health issues such as a disrupted sleep pattern, high blood pressure, weakening of the immune system in children, and a loss of hearing. In 2011, it was reported that the U.S. military—contrary to repeated denials by
The Pentagon—had kept tens of thousands of barrels of
Agent Orange on the island. The Japanese and American governments have angered some U.S. veterans, who believe they were poisoned by Agent Orange while serving on the island, by characterizing their statements regarding Agent Orange as "dubious", and ignoring their requests for compensation. Reports that more than a third of the barrels developed leaks have led Okinawans to ask for environmental investigations, but both Tokyo and Washington refused such action.
Jon Mitchell has reported concern that the U.S. used American Marines as chemical-agent guinea pigs. On September 30, 2018,
Denny Tamaki was elected as the next governor of Okinawa prefecture, after a campaign focused on sharply reducing the U.S. military presence on the island.
Marine Corps Air Station Futenma relocation In 2006, some 8,000 U.S. Marines were removed from the island and relocated to
Guam. The move to
Marine Corps Base Camp Blaz was expected to be completed in 2023 but as of January 1, 2025, is still in process. Japan paid for a majority of the cost to construct the new base. The U.S. still maintains Air Force, Marine, Navy, and Army military installations on the islands. These bases include
Kadena Air Base,
Camp Foster,
Marine Corps Air Station Futenma,
Camp Hansen,
Camp Schwab,
Torii Station,
Camp Kinser, and
Camp Gonsalves. The area of 14 U.S. bases are , occupying 18% of the main island. Okinawa hosts about two-thirds of the 50,000 American forces in Japan although the islands account for less than one percent of total lands in Japan. On December 21, 2016, 10,000 acres of Camp Gonsalves were returned to Japan. On June 25, 2018, Okinawa residents held a protest demonstration at sea against scheduled land reclamation work for the relocation of a U.S. military base within Japan's southernmost island prefecture. A protest gathered hundreds of people. Since the early 2000s, Okinawans have opposed the presence of American troops
helipads in the
Takae zone of the
Yanbaru forest near
Higashi and
Kunigami. This opposition grew in July 2016 after the construction of six new helipads. ==Geography==