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Japan

Japan Military Stats

Overview:

Japan's 1947 constitution, which renounces the right to use force or the threat of force as a means of settling international disputes, sets important limits on Japanese security policy. Japan does not have any weapons of mass destruction (WMD) programs, although it has the technical capability to produce basic nuclear weapons and missiles in a relatively short time. The Japanese government is highly active in the international nonproliferation and disarmament arena, and party to all relevant multilateral treaties and regimes. As the only country to have suffered a nuclear weapons attack, Japan has been especially active in the field of nuclear nonproliferation and arms control. Japan ratified the Nuclear Non-Proliferation Treaty (NPT) in 1976 and the Comprehensive Test Ban Treaty (CTBT) in 1997. Before 1945, Japan developed and employed both chemical and biological weapons. Japan is now a state party to both the Chemical Weapons Convention (CWC) and the Biological and Toxin Weapons Convention (BWC). Japan is also a member of the Australia Group, the Nuclear Suppliers Group, the Missile Technology Control Regime (MTCR), and the Zangger Committee. Japan has an active nuclear energy program, one of the world's leading chemical industries, a growing biotechnology sector, and an active commercial space program.

Definitions

  • Armed forces personnel: Total armed forces (2000)
  • Expenditures > Dollar figure: Current military expenditures in US dollars; the figure is calculated by multiplying the estimated defense spending in percentage terms by the gross domestic product (GDP) calculated on an exchange rate basis not purchasing power parity (PPP) terms. Dollar figures for military expenditures should be treated with caution because of different price patterns and accounting methods among nations, as well as wide variations in the strength of their currencies
  • Expenditures > Percent of GDP: Current military expenditures as an estimated percent of gross domestic product (GDP).
  • Manpower reaching militarily significant age annually > Males: This entry is derived from Military > Manpower reaching militarily significant age annually, which gives the number of males and females entering the military manpower pool (i.e., reaching age 16) in any given year and is a measure of the availability of military-age young adults.
  • Manpower reaching military age annually > Males: This entry is derived from Military > Manpower reaching military age annually, which gives the number of males and females entering the military manpower pool (i.e., reaching age 16) in any given year and is a measure of the availability of military-age young adults.
  • Military branches: This entry lists the service branches subordinate to defense ministries or the equivalent (typically ground, naval, air, and marine forces).
  • Military expenditures: This entry gives spending on defense programs for the most recent year available as a percent of gross domestic product (GDP); the GDP is calculated on an exchange rate basis, i.e., not in terms of purchasing power parity (PPP). For countries with no military forces, this figure can include expenditures on public security and police.
  • Military expenditures > Percent of GDP: This entry gives spending on defense programs for the most recent year available as a percent of gross domestic product (GDP); the GDP is calculated on an exchange rate basis, i.e., not in terms of purchasing power parity (PPP). For countries with no military forces, this figure can include expenditures on public security and police.
  • Military service age and obligation: This entry gives the required ages for voluntary or conscript military service and the length of service obligation.
  • Service age and obligation: This entry gives the required ages for voluntary or conscript military service and the length of sevice obligation.
  • WMD > Missile: A description of the nation's situation with regards to the possession and manufacture of missile weapons of mass destruction
  • WMD > Nuclear: A description of the nation's situation with regards to the possession and manufacture of nuclear weapons
STAT AMOUNT DATE RANK HISTORY
Armed forces personnel 237,000 2000 20th out of 166
Expenditures > Dollar figure $45.84 billion 2004 2nd out of 86
Expenditures > Percent of GDP 0.8% 2006 78th out of 100
Manpower available for military service > Males age 16-49 None 2013 10th out of 161
Manpower fit for military service > Males age 16-49 None 2013 9th out of 225
Manpower reaching militarily significant age annually > Males 623,365 2013 18th out of 224
Manpower reaching military age annually > Males 623,365 2012 18th out of 224
Military branches Japanese Ministry of Defense (MOD): Ground Self-Defense Force (Rikujou Jieitai, GSDF), Maritime Self-Defense Force (Kaijou Jieitai, MSDF), Air Self-Defense Force (Koukuu Jieitai, ASDF) 2011
Military expenditures 1% of GDP 2012 46th out of 70
Military expenditures > Percent of GDP 0.8% of GDP 2006 50th out of 62
Military service age and obligation 18 years of age for voluntary military service; no conscription; mandatory retirement at age 53 for senior enlisted personnel and at 62 years for senior service officers 2012
Service age and obligation 18 years of age for voluntary military service 2001
WMD > Missile Japan does not have a ballistic missile development program, but its space program includes a number of technologies that could potentially be adapted to long-range missiles. The solid-fueled M-5 rocket system, first launched in 1995, includes technologies that could be adapted to develop intercontinental ballistic missile (ICBM) capabilities roughly similar to those of the U.S. MX Peacekeeper missile. Japan's two-stage H-2 rocket is capable of placing a two-ton payload into orbit, but the H-2 is not optimal for ballistic missile applications due to its reliance on cryogenic liquid hydrogen and oxygen fuel. Japan lacks sophisticated command and control systems, as well as some guidance and warhead technology that would be necessary to develop operational missiles. Japan has partnered with the United States to research ballistic missile defenses (BMD), but has yet to make a final decision on future development and deployment. Many in Japan argue that a missile defense system would compliment the U.S. nuclear deterrent and defend against possible belligerents such as North Korea. Others argue that the system's costs outweigh the benefits, especially since the system's effectiveness is unproven. Missile defense also raises potential legal issues regarding Japanese legislation barring the military use of space. Japan is an active member of the MTCR and was involved in drafting the International Code of Conduct Against Ballistic Missile Proliferation (ICOC). 1995
WMD > Nuclear Japan's "Atomic Energy Basic Law" allows only peaceful nuclear activities, and its "Three Non-Nuclear Principles" pledge that Japan will not possess, produce, or permit the introduction of nuclear weapons into the country. Despite Japan's long-standing stance against nuclear weapons, there was an internal debate in the early 1970s about whether Japan should sign the NPT, in part due to concerns about assuring access to nuclear technology to meet national energy needs, and the discriminatory nature of the treaty. Some conservatives were also concerned that closing off the nuclear option might negatively impact future national security needs. Japan has played an active role in nuclear nonproliferation and disarmament, and has proposed a process for the total elimination of nuclear weapons. Japan ratified the CTBT in 1997 and has been a strong supporter of a Fissile Material Cut-off Treaty (FMCT). However, Japan's security relationship with the United States has tempered Tokyo's emphasis on disarmament. For example, Japan remains quiet about the possible presence of nuclear warheads on U.S. ships and military bases in Japan. Japan increasingly relies on nuclear power for its electricity needs, and has a highly developed civilian nuclear sector. Japan has a controversial program for recycling spent nuclear fuel that has produced large quantities of plutonium in the form of metal-oxide nuclear fuel. At the end of 2001, Japan had more than 30 metric tons of spent fuel stored at reprocessing plants in Britain and France, along with a domestic stockpile of 5 to 6 tons. These nuclear fuel stockpiles will ultimately return to Japan for use in domestic nuclear facilities. The original plan called for consumption of the stored fuel by 2010, but due to technical and safety issues, this timetable has been delayed and return of the stored fuel to Japan is proceeding slowly. Some argue this material could provide Japan with a latent nuclear weapons capability. In addition, the new facility under constructing in Rokkasho (Aomori Prefecture) will increase Japanese domestic reprocessing capacity and potentially produce an additional 5 tons of metal-oxide nuclear fuel per year. Although anti-nuclear sentiment among the Japanese public has far outweighed support for keeping a nuclear option open, several neighboring countries have expressed concerns about possible Japanese nuclear ambitions. Partly in response to these fears, the Japanese government completed an internal study in 1995 that reaffirmed previous conclusions that developing nuclear weapons would damage both Japan’s national security and regional security. However recent tension developing in the region, particularly in the Korean peninsula, has led to increased discussions in Japan about the once taboo subject of nuclear weapons development. Despite recent speculation that Japan may reconsider its nuclear options, the deep aversion to nuclear weapons among the Japanese public will likely make any move in this direction difficult. 2010
Weapon holdings 3.31 million 2001 27th out of 137

SOURCES: IISS (International Institute for Strategic Studies). 2001. The Military Balance 2001-2002. Oxford: Oxford University Press; All CIA World Factbooks 18 December 2003 to 18 December 2008; CIA World Factbooks 18 December 2003 to 28 March 2011; CIA World Factbooks 2010, 2011, 2012, 2013; The Nuclear Threat Initiative; Bonn International Center for Conversion (BICC)

Citation

"Japan Military Stats", NationMaster. Retrieved from http://www.nationmaster.com/country-info/profiles/Japan/Military

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