Japan Self-Defense Forces

The Japan Self-Defense Forces (自衛隊, Jieitai), JSDF, also referred to as the Self-Defense Forces (SDF), Japan Defense Forces (JDF), or the Japanese armed forces,[5] are the unified military forces of Japan that were established in 1954, and are controlled by the Ministry of Defense. The JSDF ranked as the world's fourth most-powerful military in conventional capabilities in a Credit Suisse report in 2015[6] and it has the world's eighth-largest military budget.[7] In recent years they have been engaged in international peacekeeping operations including UN peacekeeping.[8]

Japan Self-Defense Forces
Flag of the Japan Self-Defense Forces
Founded1 July 1954 (1954-07-01)[1]
Service branches Japan Ground Self-Defense Force
 Japan Maritime Self-Defense Force
 Japan Air Self-Defense Force
HeadquartersMinistry of Defense, Tokyo, Japan
Commander-in-Chief Prime Minister Shinzō Abe
Minister of Defense Tarō Kōno
Chief of Staff, Joint Staff General Kōji Yamazaki
Military age18–32 eligible for enlistment[2]
Active personnel247,150 (2018)[3]
Reserve personnel56,000 (2018)[3]
BudgetUS$47.3 billion (2018)[3]
(ranked 8th)
Percent of GDP0.9% (2018)[3]
Domestic suppliers
Foreign suppliers
Related articles
HistoryMilitary history of Japan
RanksMilitary ranks and insignia of Japan

Tensions, particularly with North Korea,[9] have reignited the debate over the status of the JSDF and its relation to Japanese society.[10] Military guidelines of December 2010 refocused the JSDF from the former Soviet Union (now Russia) to a focus on China, especially regarding the territorial dispute over the Senkaku Islands. Cooperation has increased with the United States, United Kingdom, India, South Korea and Australia.[11][12]


20th century

Deprived of any military capability after being defeated by the Allies in World War II and signing a surrender agreement presented by General Douglas MacArthur in 1945, Japan had only the U.S. occupation forces and a minor domestic police force on which to rely for security. Rising Cold War tensions in Europe and Asia, coupled with leftist-inspired strikes and demonstrations in Japan, prompted some conservative leaders to question the unilateral renunciation of all military capabilities. These sentiments were intensified in 1950 as occupation troops began to be moved to the Korean War (1950–53) theater. This left Japan virtually defenseless, vulnerable, and very much aware of the need to enter into a mutual defense relationship with the United States to guarantee the nation's external security. Encouraged by the American occupation authorities, the Japanese government in July 1950 authorized the establishment of a National Police Reserve (警察予備隊, Keisatsu-yobitai), consisting of 75,000 men equipped with light infantry weapons.[13][14] In 1952, the Coastal Safety Force (海上警備隊, Kaijō Keibitai), the waterborne counterpart of NPR, was also founded.[15][16]

The Security Treaty Between the United States and Japan was signed on 8 September 1951. The treaty allowed United States forces stationed in Japan to deal with external aggression against Japan while Japanese ground and maritime forces would deal with internal threats and natural disasters. It permitted the United States to act for the sake of maintaining peace in East Asia and exert its power on Japanese domestic quarrels. Accordingly, in mid-1952, the National Police Reserve was expanded to 110,000 men and named the National Safety Forces.[17] The Coastal Safety Force was transferred with it to the National Safety Agency to constitute an embryonic navy.

(1) Aspiring sincerely to an international peace based on justice and order, the Japanese people forever renounce war as a sovereign right of the nation and the threat or use of force as means of settling international disputes.
(2) In order to accomplish the aim of the preceding paragraph, land, sea, and air forces, as well as other war potential, will never be maintained. The right of belligerency of the state will not be recognized.

The trauma of World War II produced strong pacifist sentiments among the nation. In addition, under Article 9 of the United States–written 1947 constitution, Japan forever renounces war as an instrument for settling international disputes and declares that Japan will never again maintain "land, sea, or air forces or other war potential."[1] Later cabinets interpreted these provisions as not denying the nation the inherent right to self-defense and, with the encouragement of the United States, developed the JSDF step by step.

On July 1, 1954, the National Security Board was reorganized as the Defense Agency, and the National Security Force was reorganized afterwards as the Japan Ground Self-Defense Force (de facto post-war Japanese Army), the Coastal Safety Force was reorganized as the Japan Maritime Self-Defense Force (de facto post-war Japanese Navy)[15][16] and the Japan Air Self-Defense Force (de facto post-war Japanese Air Force) was established as a new branch of JSDF. General Keizō Hayashi was appointed as the first Chairman of Joint Staff Council—professional head of the three branches. The enabling legislation for this was the 1954 Self-Defense Forces Act (Act No. 165 of 1954).[1]

The Far East Air Force, U.S. Air Force, announced on 6 January 1955, that 85 aircraft would be turned over to the fledgling Japanese air force on about 15 January, the first equipment of the new force.[18]

On 19 January 1960, the amended Treaty of Mutual Cooperation and Security between the United States and Japan corrected the unequal status of Japan in the 1951 treaty by adding mutual defense obligations. During US army mobilization the US is required to pre-inform Japan. The US is prohibited from exerting power on domestic issues of Japan.[19] The treaty obligates Japan and the United States to assist each other if there's an armed attack in territories administered by Japan. Because it states that any attack against Japan or the United States in Japanese territory would be dangerous to each country's peace and safety. The revised treaty requires Japan and the United States to maintain capacities to resist common armed attacks. Thus it explains the need for US military bases in Japan. This established a security alliance between Japan and the United States. The treaty has lasted longer than any other alliance between two great powers since the Peace of Westphalia treaties in 1648.[20]

In 1983, Japanese Prime Minister Yasuhiro Nakasone pledged to make Japan an "unsinkable aircraft carrier in the Pacific", assisting the United States in defending against the threat of Soviet bombers.[21][22]

Although possession of nuclear weapons is not explicitly forbidden in the constitution, Japan, as the only nation to have experienced the devastation of nuclear attacks, expressed early its abhorrence of nuclear arms and its determination never to acquire them. The Atomic Energy Basic Law of 1956 limits research, development, and use of nuclear power to peaceful uses only. Beginning in 1956, national policy embodied "three non-nuclear principles"—forbidding the nation to possess or manufacture nuclear weapons or to allow them to be introduced into its territories. In 1976 Japan ratified the Treaty on the Non-Proliferation of Nuclear Weapons (adopted by the United Nations Security Council in 1968) and reiterated its intention never to "develop, use, or allow the transportation of nuclear weapons through its territory". Nonetheless, because of its generally high technology level and large number of operating nuclear power plants, Japan is generally considered to be "nuclear capable", i.e., it could develop usable nuclear weapons within one year if the political situation changed significantly.[23] Thus many analysts consider Japan a de facto nuclear state.[24][25] Japan is often said to be a "screwdriver's turn"[26][27] away from possessing nuclear weapons, or to possess a "bomb in the basement".[28]

On May 28, 1999, the Regional Affairs Law was enacted. It allows Japan to automatically participate as "rear support" if the United States begins a war under "regional affairs."[29]

21st century

The Anti-Terrorism Special Measures Law was passed on October 29, 2001. It allows the JSDF to contribute by itself to international efforts to the prevention and eradication of terrorism. While on duty the JSDF can use weapons to protect themselves and others who come under their control. Previously Japan's policy was non-involvement.[30]

On March 27, 2004, the Japan Defense Agency activated the Special Operations Group with the mandate under the JGSDF as its Counter-terrorist unit.[31]

On June 8, 2006, the Cabinet of Japan endorsed a bill elevating the Defense Agency (防衛庁) under the Cabinet Office to full-fledged cabinet-level Ministry of Defense (防衛省). This was passed by the National Diet in December 2006, and has been enforced since January 9, 2007.[32]

Section 2 of Article 3 of the Self Defense Forces Act was revised on January 9, 2007. JSDF activities abroad were elevated from "miscellaneous regulations" to "basic duties." This fundamentally changed the nature of the JSDF because its activities are no longer solely defensive. JMSDF ships can be dispatched worldwide such as in activities against pirates. The JSDF's first postwar overseas base was established in Djibouti, Somalia (July 2010).[29]

In 2007, Prime Minister Shinzō Abe said that Japan's constitution did not necessarily ban possession of nuclear weapons, so long as they were kept at a minimum and were tactical weapons, and Chief Cabinet Secretary Yasuo Fukuda expressed a similar view.[33]

On 18, September 2015, the National Diet enacted the 2015 Japanese military legislation, a series of laws that allow Japan's Self-Defense Forces to collective self-defense of allies in combat for the first time under its constitution. The Self-Defense Forces may provide material support to allies engaged in combat internationally. It also allows JSDF troops to defend weapons platforms of foreign countries that contribute to Japan's defense. The justification is that by not defending/supporting an ally, it would weaken alliances and endanger Japan. These were Japan's broadest changes to its defense laws since World War II.[34]

The JSDF Act was amended in 2015 in order to make it illegal for JSDF personnel/staff to participate in collective insubordination or to command forces without authority or in violation of orders, which was stated to be the reason why Japan was involved in China in World War II.[35]

A Credit Suisse survey published in 2015 ranked Japan as the world's fourth most-powerful military behind the United States, Russia and China.[6]

Since March 2016, Japan's Legislation for Peace and Security enables seamless responses of the JSDF to any situation to protect the lives and livelihood of Japanese people. It also increases proactive contributions to peace and security in the world and deepens cooperation with partners. This enhanced the Japan-US alliance as global partners to promote peace and security in the region and the international community.[36]

In May 2017, Japanese Prime Minister Shinzo Abe set a 2020 deadline for revising the Article 9 of the Japanese Constitution, a clause in the national Constitution of Japan outlawing war as a means to settle international disputes involving the state. This charter was written by the United States.[37][38][39]

Japan activated the Amphibious Rapid Deployment Brigade, its first marine unit since World War Two, on April 7, 2018. They're trained to counter invaders from occupying Japanese islands.[40]

The Ministry of Defense said from 1 October 2018, the maximum age for enlisted personnel and non-commissioned officer applicants will be raised to 32 from 26 to secure “a stable supply of Self-Defense Forces (military) personnel amid a declining pool of recruits due to the recently declining birth rate.”[2]

In March 2019, the Ministry of Defense will establish its first regional cyber protection unit in the Western Army of the Japan Ground Self-Defense Force (JGSDF) to safeguard defense communications from cyber attacks. Such as for personnel deployed on remote islands with no established secure lines.[41]

The Ministry of Defense is developing supersonic glide bombs to strengthen the defense of Japan's remote islands, including the Senkaku Islands. The anti-surface strike capability will be used to help the Amphibious Rapid Deployment Brigade’s landing and recapture operations of remote islands.[42]

The Ministry of Defense allocated $57 million for research and development of a hypersonic missile in the 2019 Defense Budget. It could travel five times the speed of sound (Mach 5) or faster. A scramjet engine prototype, jet fuel technology and heat-resistant materials will be built with testing from 2023 to 2025.[43]

British troops of the Honourable Artillery Company (HAC) exercised together for the first time with Japanese GSDF soldiers in Oyama, Shizuoka prefecture on 2 October 2018. This also marked the first time in history that foreign soldiers other than Americans exercised on Japanese soil. The purpose was to improve their strategic partnership and security cooperation. Lieutenant General Patrick Sanders said that Japan won't have to fight alone.[11]

Japan christened the 84-meter long, 2,950 tons Oryu submarine on October 4, 2018. It is Japan's first submarine powered by lithium-ion batteries and was developed by Mitsubishi Heavy Industries. The Japan Maritime Self-Defense Force will utilize it by March 2020.[44]

The JGSDF and the Indian Army conducted their first joint military exercise in the Indian state of Mizoram from 27 October to 18 November 2018. It's primarily anti-terror drills and improving bilateral cooperation with 60 Japanese and Indian officers.[45]

Japan and the United States conducted the biggest military exercise around Japan thus far in the biennial Keen Sword from 29 October to 2 November 2018. It included a total of 57,000 sailors, marines and airmen. 47,000 service members were from the JSDF and 10,000 from the U.S. Armed Forces. A naval supply ship and frigate of the Royal Canadian Navy also participated. There were simulations of air combat, ballistic missile defense and amphibious landings.[46]

The Japanese government approved the first ever JSDF dispatch to a peacekeeping operation that's not lead by the United Nations. Two JGSDF officers will monitor a cease-fire between Israel and Egypt at the Multinational Force and Observers command in the Sinai peninsula from 19 April till 30 November 2019.[47]

On 19 April 2019, Japan and the United States confirmed that cyberattacks are also covered by the bilateral security treaty. This will be judged on a case-by-case basis. Defense cooperation will increase for outer space, cyber and electronic warfare.[48]

Defense Minister Takeshi Iwaya announced plans to deploy Type 12 surface-to-ship missiles in March 2020. They have an increased range of 300 km and will be used to protect the southern Ryukyu Islands. Japan is also developing high-speed gliding missiles with a range of 1000 km.[49]


The Prime Minister is the commander-in-chief of the Japan Self-Defense Forces. Military authority runs from the Prime Minister to the cabinet-level Minister of Defense of the Japanese Ministry of Defense.A[50][36][51][52]

The Prime Minister and Minister of Defense are advised by the Chief of Staff, Joint Staff (統合幕僚長, Tōgō Bakuryō-chō) (currently Kōji Yamazaki), who heads the Joint Staff (統合幕僚監部, Tōgō Bakuryō Kanbu). The Joint Staff includes a Senior Enlisted Advisor to the Chief of Staff, Joint Staff, the Vice Chief of Staff, Joint Staff (currently Yutaka Masuko), an Administrative Vice Chief of Staff, as well as numerous departments and special staffs.[53] Each service branch is headed by their respective Chiefs of Staff; the Chief of Staff of the Japan Ground Self-Defense Force (JGSDF) (currently Gorō Yuasa), the Japan Maritime Self-Defense Force (JMSDF) (currently Hiroshi Yamamura), and the Japan Air Self-Defense Force (JASDF) (currently Yoshinari Marumo).[54][55][56][57]

The Chief of Staff, Joint Staff, a four star Admiral or General, is the highest-ranking military officer in the Japan Self-Defense Forces, and is the head of the Operational Authority over the Japan Self-Defense Forces, executing orders of the Minister of Defense with directions from the Prime Minister.[52][58] The Chief of Staff, Joint Staff supervises the service branches operations, and would assume command in the event of a war, but his or her powers are limited to policy formation and defense coordination during peacetime.[50][36]

The chain of Operational Authority runs from the Chief of Staff, Joint Staff to the Commanders of the several Operational Commands. Each service branches Chiefs of Staff (JGSDF, JMSDF, JASDF) have administrative control over their own services.[51][58][59]

Service branches

Service units

  • Five armies
  • Five maritime districts
  • Four air defense forces

Defense policy

National Security Council

On December 4, 2013, the National Security Council was established, with the aim of establishing a forum which will undertake strategic discussions under the Prime Minister on a regular basis and as necessary on various national security issues and exercising a strong political leadership.

National Security Strategy

On December 17, 2013, National Security Strategy was adopted by Cabinet decision. NSS sets the basic orientation of diplomatic and defense policies related to national security. NSS presents the content of the policy of "Proactive Contribution to Peace" in a concrete manner and promotes better understanding of Japan's national security policy.[60]

On July 25, 2018, the Japanese government settled on a 3-year strategy to counter possible cyberattacks against key parts of the nation's infrastructure ahead of the 2020 Tokyo Olympic and Paralympic Games.[61]

Constitutional limitations

Article 9 of the Japanese Constitution prohibits Japan from establishing a military or solving international conflicts through violence. However, there has been widespread public debate since 2000 about the possibility of reducing or deleting Article 9 from the constitution. The article is interpreted as meaning that armed forces are legitimate for self-defense. This limits the capabilities of the JSDF as primarily for national defense. Currently, there are no long-range attack capabilities such as medium or intercontinental missiles, Strategic bombers, tankers and combat divers. The United States military is primarily responsible for offensive duties.


In 1976, then Prime Minister Miki Takeo announced defense spending should be maintained within 1% of Japan's gross domestic product (GDP),[62] a ceiling that was observed until 1986.[63] As of 2005, Japan's military budget was maintained at about 3% of the national budget; about half is spent on personnel costs, while the rest is for weapons programs, maintenance and operating costs.[64] As of 2011, Japan has the world's eighth-largest military budget.[7][65]

The published military budget of Japan for 2015 was 4.98 trillion yen (approximately US$42 billion, and roughly 1% of Japanese GDP), a rise of 2.8 percent on the previous year.[66]

Anti-ballistic missile deployment

After the North Korean Kwangmyŏngsŏng-1 satellite launching in August 1998, which some regarded as a ballistic missile test, the Japanese government decided to participate in the American anti-ballistic missile (ABM) defense program. In August 1999, Japan, Germany and the US governments signed a Memorandum of Understanding of joint research and development on the Aegis Ballistic Missile Defense System.[67] In 2003, the Japanese government decided to deploy three types of ABM system, air defense vehicles, sea-based Aegis and land-based PAC-3 ABM.

The four Kongō class Aegis destroyers of the Japan Maritime Self-Defense Force were modified to accommodate the ABM operational capability.[68] On December 17, 2007, JS Kongō successfully shot down a mock ballistic missile by its SM-3 Block IA, off the coast of Hawaii.[69] The first PAC-3 (upgraded version of the MIM-104 Patriot) firing test by the Japan Air Self-Defense Force was carried out in New Mexico on September 17, 2008.[70] PAC-3 units are deployed in 6 bases near metropolises, including Tokyo, Osaka, Nagoya, Sapporo, Misawa and Okinawa.

Japan participates in the co-research and development of four Aegis components with the US: the nose cone, the infrared seeker, the kinetic warhead, and the second-stage rocket motor.[71][72]

On 30 July 2018, Japan picked Lockheed Martin Corp to build a $1.2 billion radar for two ground-based Aegis ballistic missile defense stations. These are meant to guard against missile strikes.[73] On the same day, Japan's Defense Ministry said to be considering to withdraw PAC3 missile interceptor units from the country's northern and western region amid an easing of tensions with North Korea. Ministry officials told that North Korea is less likely to fire ballistic missiles after it held a summit with the United States last month. But the officials also said the ministry will maintain its order to destroy any incoming missiles. They added that the ministry will be ready to quickly redeploy the PAC3 units if the situation changes.[74]

Amphibious force

In light of tensions over the Senkaku Islands, Japan began creating the Amphibious Rapid Deployment Brigade in 2016. This unit will be designed to conduct amphibious operations and to recover any Japanese islands taken by an adversary.[75]

Japan activated its first marine unit since World War Two on April 7, 2018. The marines of the Japanese Ground Self-Defense Force (JGSDF)'s Amphibious Rapid Deployment Brigade, gathered at a ceremony activating the brigade at JGSDF's Camp Ainoura in Sasebo, on the southwest island of Kyushu, Japan. They're trained to counter invaders from occupying Japanese islands along the edge of the East China Sea that Tokyo fears are vulnerable to attack.[40] Related to the defense of the southwestern islands, Japan has initiated a program to convert its Izumo-class destroyer two-ship fleet from "helicopter carrier destroyers” to aircraft carriers with a capability to launch the F-35B - to be the first Japanese aircraft carriers since WW2.[76]

Unarmed combat system

JSDF soldiers are trained in the military self-defense art of Toshu kakutō (徒手格闘), developed in 1952 by Major Chiba Sansu from a synthesis of jujutsu, karate, aiki-jujutsu, boxing and wrestling. The techniques of toshu kakutō are simplified and direct, to allow for their application whilst in combat dress and carrying field kit. There is an emphasis on the rapid transmission of maximum force in strikes, and for this reason toshu kakutō eschews the fully rotated punches and instep kicks of most karate forms in favour of vertical thrust punches and straight heel kicks.[77]

Missions and deployments

The outer outline specified quotas of personnel and equipment for each force that were deemed necessary to meet its tasks. Particular elements of each force's mission were also identified. The JGSDF was to defend against ground invasion and threats to internal security, be able to deploy to any part of the nation, and protect the bases of all three services of the Self-Defense Forces. The JMSDF was to meet invasion by sea, sweep mines, patrol and survey the surrounding waters, and guard and defend coastal waters, ports, bays, and major straits. The JASDF was to render aircraft and missile interceptor capability, provide support fighter units for maritime and ground operations, supply air reconnaissance and air transport for all forces, and maintain airborne and stationary early warning units.

The JSDF disaster relief role is defined in Article 83 of the Self-Defense Forces Law of 1954, requiring units to respond to calls for assistance from prefectural governors to aid in fire suppression, search and rescue, and flood fighting through the reinforcement of embankments and levees. The JSDF has not been used in police actions, nor is it likely to be assigned any internal security tasks in the future.

In late June/early July 2014, Prime Minister Shinzo Abe and his cabinet agreed to lift the long-term ban in engaging Japanese troops abroad, since the end of the Second World War, in a bid to strengthen the Japanese situation amid an ever-growing Chinese military aggression and North Korea's nuclear weapons programme. Japan had adhered to the "pacifist" article 9 of the constitution, but would revise and might reinterpret it in order for this to take effect.[78]


In June 1992, the National Diet passed a UN Peacekeeping Cooperation Law which permitted the JSDF to participate in UN medical, refugee repatriation, logistical support, infrastructural reconstruction, election-monitoring, and policing operations under strictly limited conditions.[79]

The non-combatant participation of the JSDF in the United Nations Transitional Authority in Cambodia (UNTAC) in conjunction with Japanese diplomatic efforts contributed to the successful implementation of the 1991 Paris Peace Accords for Cambodia.

Chief Cabinet Secretary Nobutaka Machimura had stated that discussions with Defense Minister Shigeru Ishiba and Foreign Minister Masahiko Komura were taking place regarding the possibility of creating a permanent law for JSDF forces to be deployed in peacekeeping missions outside Japan.[80] The adoption of a permanent peacekeeping law has been considered by the government, according to the Mainichi Daily News.[81] In 2014, the LDP did not make progress due to concerns from Komeito that JSDF forces can be sent to a peacekeeping operation where Japan is not involved.[82]

In 2004, the Japanese government ordered a deployment of troops to Iraq at the behest of the United States: A contingent of the Japan Self-Defense Forces was sent in order to assist the U.S.-led Reconstruction of Iraq. This controversial deployment marked a significant turning point in Japan's history, as it is the first time since the end of World War II that Japan sent troops abroad except for a few minor UN peacekeeping deployments. Public opinion regarding this deployment was sharply divided, especially given that Japan's military is constitutionally structured as solely a self-defense force, and operating in Iraq seemed at best tenuously connected to that mission. The Koizumi administration, however, decided to send troops to respond to a request from the US. Even though they deployed with their weapons, because of constitutional restraints, the troops were protected by Japanese Special Forces troops and Australian units. The Japanese soldiers were there purely for humanitarian and reconstruction work, and were prohibited from opening fire on Iraqi insurgents unless they were fired on first. Japanese forces withdrew from Iraq in 2006.

Japan provided logistics units for the United Nations Disengagement Observer Force Zone, which supervises the buffer zone in the Golan Heights, monitors Israeli and Syrian military activities, and assists local civilians.

Japanese forces are frequent among the international disaster relief teams, with deployments in Rwanda (1994), Honduras (1998), Turkey (1999), West Timor (1999–2000), Afghanistan (2001), Iraq (2003), Iran (2003–2004), Thailand (2004–2005), Indonesia (2005), Russia (2005), Pakistan (2005), Indonesia (2006), Indonesia (2009), Haiti (2010), Pakistan (2010), New Zealand (2011).[83] In the aftermath of an earthquake in Haiti, Japan deployed a contingent of troops, including engineers with bulldozers and heavy machinery, to assist the United Nations Stabilization Mission in Haiti. Their duties were peacekeeping, removal of rubble, and the reconstruction of roads and buildings.[84]

Self-Defense Forces have conducted overseas activities such as dispatching UN peacekeepers to Cambodia. In 2003, Japan created a law to deal with armed attacks and amended the Self-Defense Forces law. In 2004, Japan dispatched for two and a half years to the Samawa district of southern Iraq under the Special Measures for Iraqi Recovery Support Act.

The Japan Maritime Self-Defense Force deployed a force off the coast of Somalia to protect Japanese ships from Somali Pirates. The force consists of two destroyers (manned by approximately 400 sailors), patrol helicopters, speedboats, eight officers of the Japan Coast Guard to collect criminal evidence and handle piracy suspects, a force of commandos from the elite Special Boarding Unit, and P-3 Orion patrol aircraft in the Gulf of Aden.[85] On 19 June 2009, the Japanese Parliament finally passed an anti-piracy bill, which allows their force to protect non Japanese vessels.[86] In May 2010, Japan announced it intended to build a permanent naval base in Djibouti to provide security for Japanese ships against Somali pirates.[87]

Construction of the JSDF Counter-Piracy Facility in Djibouti commenced in July 2010, completed in June 2011 and opened on 1 July 2011.[88] Initially, the base was to house approximately 170 JSDF personnel and include administrative, housing, medical, kitchen/dining, and recreational facilities as well as an aircraft maintenance hangar and parking apron.[89] The base now houses approximately 200 personnel and two P-3C aircraft.[88]

JSDF Overseas Dispatches

Since 1991, the Japan Self-Defense Forces have conducted international activities to provide support for peacekeeping missions and disaster relief efforts as well as to help prevent conflict and terrorism.[90]

Uniforms, ranks, and insignia

The arm of service to which members of the ground force are attached is indicated by branch insignia and piping of distinctive colors: for infantry, red; artillery, yellow; armor, orange; engineers, violet; ordnance, light green; medical, green; army aviation, light blue; signals, blue; quartermaster, brown; transportation, dark violet; airborne, white; and others, dark blue. The cap badge insignia the JGSDF is a sakura cherry blossom bordered with two ivy branches underneath, and a single chevron centered on the bottom between the bases of the branches; the JMSDF cap badge insignia consists of a fouled anchor underneath a cherry blossom bordered on the sides and bottom by ivy vines; and the JASDF cap badge insignia features a heraldic eagle under which is a star and crescent, which is bordered underneath with stylized wings.[91]

There are nine officer ranks in the active JSDF, along with a warrant officer rank, five NCO ranks, and three enlisted ranks. The highest NCO rank, first sergeant (senior chief petty officer in the JMSDF and senior master sergeant in the JASDF), was established in 1980 to provide more promotion opportunities and shorter terms of service as sergeant first class, chief petty officer, or master sergeant. Under the earlier system, the average NCO was promoted only twice in approximately thirty years of service and remained at the top rank for almost ten years.[91]

Recruitment and conditions of service

The total strength of the JSDF is 247,154 in 2016.[92][93] In addition, the JSDF maintained a total of 47,900 reservists attached to the three services. The Japanese Constitution abolished conscription on 3 May 1947. Enlistment in the JSDF is voluntary at 18 years of age.[94]

When Japan's active and reserve components are combined the country maintains a lower ratio of military personnel to its population than any member nation of the North Atlantic Treaty Organization (NATO). Of the major Asian nations, only India, Indonesia, Malaysia and Thailand keep a lower ratio of personnel in arms. Since India and Indonesia have much larger populations, they have larger numbers of personnel.

JSDF uniformed personnel are recruited as private, E-1, seaman recruit, and airman basic for a fixed term. Ground forces recruits normally enlist for two years; those seeking training in technical specialties enlist for three. Naval and air recruits normally enlist for three years. Officer candidates, students in the National Defense Academy and National Defense Medical College, and candidate enlist students in technical schools are enrolled for an indefinite period. The National Defense Academy and enlisted technical schools usually require an enrollment of four years, and the National Defense Medical College require six years.

When the JSDF was originally formed, women were recruited exclusively for the nursing services. Opportunities were expanded somewhat when women were permitted to join the JGSDF communication service in 1967 and the JMSDF and JASDF communication services in 1974. By 1991, more than 6,000 women were in the JSDF, about 80% of service areas, except those requiring direct exposure to combat, were open to them. The National Defense Medical College graduated its first class with women in March 1991, and the National Defense Academy began admitting women in FY 1992.[95]

JSDF personnel benefits are not comparable to such benefits for active-duty military personnel in other major industrialized nations. Health care is provided at the JSDF Central Hospital, fourteen regional hospitals, and 165 clinics in military facilities and on board ship, but the health care only covers physical examinations and the treatment of illness and injury suffered in the course of duty. There are no commissary or exchange privileges. Housing is often substandard, and military appropriations for facilities maintenance often focus on appeasing civilian communities near bases rather than on improving on-base facilities.[91]

In 2010, Sapporo District Court fined the state after a female JASDF member was sexually assaulted by a colleague then forced to retire, while the perpetrator was suspended for 60 days.[96]

Role in Japanese society

Appreciation of the JSDF continued to grow in the 1980s, with over half of the respondents in a 1988 survey voicing an interest in the JSDF and over 76% indicating that they were favourably impressed. Although the majority (63.5%) of respondents were aware that the primary purpose of the JSDF was maintenance of national security, an even greater number (77%) saw disaster relief as the most useful JSDF function. The JSDF therefore continued to devote much of its time and resources to disaster relief and other civic action. Between 1984 and 1988, at the request of prefectural governors, the JSDF assisted in approximately 3,100 disaster relief operations, involving about 138,000 personnel, 16,000 vehicles, 5,300 aircraft, and 120 ships and small craft. In addition, the JSDF participated in earthquake disaster prevention operations and disposed of a large quantity of World War II explosive ordnance, especially in Okinawa Prefecture. The forces also participated in public works projects, cooperated in managing athletic events, took part in annual Antarctic expeditions, and conducted aerial surveys to report on ice conditions for fishermen and on geographic formations for construction projects. Especially sensitive to maintaining harmonious relations with communities close to defense bases, the JSDF built new roads, irrigation networks, and schools in those areas. Soundproofing was installed in homes and public buildings near airfields.

Japan Self-Defense Forces Day

The Japan Self-Defense Forces Day (自衛隊記念日, Jieitai Kinen'bi) celebrates the foundation of the Japan Self-Defense Forces. It is celebrated every year in Japan since 1966.[97] The JGSDF, JMSDF and JASDF hold annual reviews in rotation.[98] There is also a three-day music event called the JSDF Marching Festival. The date varies per year.[99]

Fleet Reviews

The 28th Fleet Review was held in Sagami Bay on 18 October 2015. 42 vessels participated in the celebratory cruise including the JS Izumo and six vessels from Australia, France, India, the Republic of Korea, and the United States. 37 aircraft from the JASDF and the U.S. forces flew over.[100]

During the 2018 Self-Defense Forces Day, Prime Minister Shinzo Abe reviewed JSDF members at Camp Asaka. There were 4,000 troops, 260 tanks and other military vehicles and 40 warplanes. Abe said that they have gained public trust and it is the responsibility of politicians to revise the 1947 constitution to mention the JSDF and give them a sense of pride.[98]

JSDF Marching Festival

The JSDF Marching Festival (自衛隊音楽まつり, Jieitai Ongaku Matsuri) is the JSDF's largest music event held annually around November. It usually takes place in Nippon Budokan for three days. It also features guest bands from other countries. It was established in 1963. It is one of the oldest military tattoos in the Asia-Pacific region.

In 2014, the JGSDF Central Band, the JMSDF Tokyo Band, the JASDF Central Band, and the JGSDF Northern and Eastern Army Bands participated as well as special guest bands from the United States Army, Japan, the 3rd Marine Expeditionary Force, the Australian Army, and the Philippine Marine Corps. There were band performances, honor guard display by the JGSDF 302nd Military Police Company, a drill by the National Defense Academy and taiko drum performance by the JSDF Drum Teams.[99]

Fuji Firepower Review

The Fuji Firepower Review (富士総合火力演習, Fuji-sōgōkaryoku-enshū) is the JGSDF's largest annual live-fire drill. It began in 1961 and is open to the public since 1966 for the purpose of deepening public understanding of the JSDF. On August 26, 2018, it was held in front of the defense minister and 24,000 spectators at the East Fuji Maneuver Area in Gotemba near the foot of Mount Fuji. That was the first time that the Amphibious Rapid Deployment Brigade participated. The drill was based on a scenario of Japanese troops being deployed to recover far-flung islands from enemy forces. It involved about 2,400 troops, 80 tanks and armored vehicles, 60 artillery shells and 20 helicopters and fighter jets.[101]

JSDF museums

These are museums about the JSDF.

  • JMSDF Kure Museum - about the JMSDF and includes the retired JMSDF Yūshio-class submarine Akishio (SS-579).
  • JGSDF Public Information Center - it has a museum with real combat equipment and vehicles of the JGSDF.
  • Hamamatsu Air Base - it has a museum about the JASDF with Japanese aviation, planes, technology, tokusatsu and military history.
  • Maritime Self-Defense Force Sasebo Museum - it has much historical materials and equipment of the Japan Maritime Self-Defense Force.
  • Kanoya Air Base Museum - it is the Japan Air Self-Defense Force's historical museum in Kanoya City, Kagoshima Prefecture.

See also


A. ^ Previously, the director-general of the Defense Agency (防衛庁, Bōei-chō) reported to the Prime Minister. The Defense Agency ceased to exist with the establishment of the cabinet-level Ministry of Defense in 2007.[52][102]
B. ^ Also known as Fujikura Aviation Equipment Corporation. The company is a major component of the Fujikura group.
C. ^ Better known as Nippon Oil & Fats Co., Ltd or NOF Corporation. The company's current Japanese trading name is Nichiyu Kabushikigaisha.


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