United States Forces Japan in the context of "Fuchū Air Base (Tokyo)"

Okinawa Island (Japanese: 沖縄島, Hepburn: Okinawa-jima; Okinawan: 沖縄 / うちなー, romanized: Uchinā; Kunigami: ふちなー, romanized: Fuchináa), also known as Okinawa Main Island (沖縄本島, Okinawa-hontō), is the largest of the Okinawa Islands and the Ryukyu (Nansei) Islands of Japan in the Kyushu region. It is the smallest and least populated of the five main islands of Japan. The island is approximately 106 kilometres (66 mi) long, an average 11 kilometres (7 mi) wide, and has an area of 1,206.98 square kilometers (466.02 sq mi). It is roughly 640 kilometres (350 nmi; 400 mi) south of the main island of Kyushu and the rest of Japan. It is 500 km (270 nmi; 310 mi) northeast of Taiwan. The total population of Okinawa Island was 1,384,762 in 2009. The greater Naha area has roughly 800,000 residents, while the city itself has about 320,000 people. Naha is the seat of Okinawa Prefecture on the southwestern part of Okinawa Island. Okinawa has a humid subtropical climate.

Okinawa has been a strategic location for the United States Armed Forces since the Battle of Okinawa and the end of World War II. The island was formally controlled by the United States Civil Administration of the Ryukyu Islands until 1972, with around 26,000 U.S. military personnel stationed on Okinawa today, comprising about half of the total complement of the United States Forces Japan, spread among 31 areas, across 13 bases and 48 training sites. United States military installations cover approximately 25% of the island and have been a point of contention among locals. Crimes committed by US military personnel, notably the 1995 Okinawa rape incident, have caused protests against the US military presence in Okinawa.

Article 9 of the Constitution of Japan (日本国憲法第9条, Nihon koku kenpō dai kyū-jō) is a clause in the Constitution of Japan outlawing war as a means to settle international disputes involving the state. The Constitution was drafted following the surrender of Japan in World War II. It came into effect on 3 May 1947 during the occupation of Japan by the Allies, which lasted until 28 April 1952. In its text, the state formally renounces the sovereign right of belligerency and aims at an international peace based on justice and order. The article also states that, to accomplish these aims, armed forces with war potential will not be maintained. The Constitution was imposed by U.S. military occupation (Supreme Commander for the Allied Powers) to prevent rearmament of Japan in the post–World War II period. This condition was a similar prohibition placed on post-war Germany, to be overseen by the United Kingdom, after World War I. However, Germany remilitarized anyway in the decades following despite this prohibition under the Weimar Republic and later Adolf Hitler's regime. This was a leading call for the Allied mandate, and the continuing US defense agreements that would render aid in maintaining Japanese sovereignty in the event of a foreign attack.

There are the post-occupation U.S. military stationed in Japan under the U.S.–Japan Mutual Cooperation and Security Treaty and Japan Self-Defense Forces (JSDF) which was founded in 1954 as de facto postwar Japanese military. Prime Minister Shinzo Abe approved a reinterpretation which gave more powers to the JSDF in 2014, which was passed by the Legislation for Peace and Security in 2015.

The Japan Self-Defense Forces (Japanese: 自衛隊, Hepburn: Jieitai; JSDF) are the military forces of Japan. The JSDF comprises the Japan Ground Self-Defense Force, the Japan Maritime Self-Defense Force, and the Japan Air Self-Defense Force. They are controlled by the Ministry of Defense with the Prime Minister as commander-in-chief.

The Japanese Constitution, which was adopted by the Supreme Command for the Allied Powers during the occupation of Japan after World War II, stipulates that Japan will never maintain a military as well as other war potential. However, rising tensions during the Cold War led to the reinterpretation of the constitution to allow for the right to self-defense, eventually leading to the creation of the Japan Self-Defense Forces in 1954 that functions as the country's de facto military. Since the end of the Cold War, and particularly into the 21st century, increased tensions with China, North Korea, and Russia have reignited debate over the status of the JSDF and their relationship to Japanese society. The JSDF have maintained a close alliance with the United States, and have prioritized greater cooperation and partnership with Australia, India, Taiwan, South Korea, Singapore, the United Kingdom, and NATO, as well as acquiring new equipment and hardware.

The 1995 Okinawa rape incident (Japanese: 沖縄米兵少女暴行事件) occurred on September 4, 1995, when three U.S. servicemen, 22-year-old U.S. Navy Seaman Marcus Gill, 21-year-old U.S. Marines Rodrico Harp, and 20-year-old Kendrick Ledet, all serving at Camp Hansen in Okinawa Island, rented a van and kidnapped a 12-year-old Okinawan girl. Gill beat her, after the other two duct-taped her eyes and mouth shut, and bound her hands. Gill and Harp then raped her, while Ledet—who was described in news reports at the time as being small framed in school—claimed he only pretended to do so due to fear of Gill.

The offenders were tried and convicted in Japanese court by Japanese law, in accordance with the U.S.–Japan Status of Forces Agreement. The families of the defendants initially claimed that Japanese officials had racially discriminated against the men because they were all African American and coerced confessions from them, but later retracted the claims. The incident led to further debate over the continued presence of U.S. forces in Japan among Okinawans. As a result of this case, governments on both sides would seek ways to reduce Okinawa's base burden, and in the decades following various measures would be enacted to prevent sexual crimes from happening, along with Japan increasing prison lengths for rape and making it so prosecutors can bring offenders to justice even if charges are not brought by the victim.

Postwar Japan is the period in Japanese history beginning with the surrender of Japan to the Allies of World War II on 2 September 1945, and lasting at least until the end of the Shōwa era in 1989.

Despite the massive devastation it suffered in the Second World War, Japan established itself as a global economic power at peace with the world after the Allied-occupation ended on 28 April 1952 by the Treaty of San Francisco. In terms of political power it was more reluctant, especially in the nonuse of military force. The post-war constitution of 1947 included Article 9, which restricted Japan from having a military force and engaging in war. However, it has operated military forces in the stationing of the United States Forces Japan based on the U.S.-Japan Security Treaty after the Allied occupation and the form of the Japanese Self-Defense Forces since 1954.

The Fifth Air Force (5 AF) is a Numbered Air Force of the United States Air Force Pacific Air Forces (PACAF). It is headquartered at Yokota Air Base, Japan. It is the U.S. Air Force's oldest continuously serving Numbered Air Force. The organization has provided 80 years of continuous air power to the Pacific since its establishment in September 1941.

Fifth Air Force is the Headquarters Pacific Air Forces forward element in Japan, and maximizes partnership capabilities and promotes bilateral defense cooperation. In addition, 5 AF is the air component to United States Forces Japan.