Korea, South Military 2022, CIA World Factbook

Armed Forces of the Republic of Korea: Republic of Korea Army (ROKA), Navy (ROKN, includes Marine Corps, ROKMC), Air Force (ROKAF); Military reserves include Mobilization Reserve Forces (First Combat Forces) and Homeland Defense Forces (Regional Combat Forces); Ministry of Maritime Affairs and Fisheries: Korea Coast Guard (2022)

note: in January 2022, the South Korean military announced the formation of a space branch under its Joint Chiefs of Staff to coordinate the development of space and space-enabled capabilities across the Army, Navy and Air Force

Military expenditures

2.6% of GDP (2022 est.)

2.6% of GDP (2021)

2.6% of GDP (2020)

2.7% of GDP (2019) (approximately $58.1 billion)

2.5% of GDP (2018) (approximately $55.8 billion)

Military and security service personnel strengths

approximately 555,000 active duty personnel (420,000 Army; 70,000 Navy, including about 30,000 Marines; 65,000 Air Force) (2022)

Military equipment inventories and acquisitions

the South Korean military is equipped with a mix of domestically-produced and imported weapons systems; South Korea has a robust defense industry and production includes armored fighting vehicles, artillery, aircraft, and naval ships; since 2010, the top foreign weapons supplier has been the US, and some domestically-produced systems are built under US license (2022)

Military service age and obligation

18-35 years of age for compulsory military service for all men; minimum conscript service obligation varies by service - 18 months (Army, Marines), 20 months (Navy), 21 months (Air Force); 18-26 years of age for voluntary military service for men and women (2022)

note 1: women, in service since 1950, are able to serve in all branches, including as officers, and in 2020 comprised about 7.5% of the active duty military

note 2: in 2022, about 330,000 of the military's active personnel were conscripts; the military brings on over 200,000 conscripts each year

Military deployments

250 Lebanon (UNIFIL); 280 South Sudan (UNMISS); 170 United Arab Emirates; note - since 2009, South Korea has kept a naval flotilla with approximately 300 personnel in the waters off of the Horn of Africa and the Arabian Peninsula (2022)

Military - note

the 1953 US-South Korea Mutual Defense Treaty is a cornerstone of South Korea’s security; the Treaty committed the US to provide assistance in the event of an attack, particularly from North Korea; in addition, the Treaty gave the US permission to station land, air, and sea forces in and about the territory of South Korea as determined by mutual agreement; as of 2022, the US maintained approximately 28,000 military personnel in the country

the South Korean military has assisted the US in conflicts in Afghanistan (5,000 troops; 2001-2014), Iraq (20,000 troops; 2003-2008), and Vietnam (325,000 troops; 1964-1973)

South Korea has Major Non-NATO Ally (MNNA) status with the US; MNNA is a designation under US law that provides foreign partners with certain benefits in the areas of defense trade and security cooperation; while MNNA status provides military and economic privileges, it does not entail any security commitments

in 2016, South Korea concluded an agreement with the EU for participation in EU Common Security and Defense Policy (CSDP) missions and operations, such as the EU Naval Force Somalia – Operation Atalanta, which protects maritime shipping and conducts counter-piracy operations off the coast of East Africa

South Korea has been engaged with NATO through dialogue and security cooperation since 2005 and is considered by NATO to be a global partner; it has participated in NATO-led missions and exercises, including leading an integrated civilian-military reconstruction team in Afghanistan as part of the NATO-led International Security Assistance Force, 2010-2013; it has also cooperated with NATO in countering the threat of piracy in the Gulf of Aden by providing naval vessels as escorts

in addition to the invasion of South Korea and the subsequent Korean War (1950-53), North Korea from the 1960s to the 1980s launched a considerable number of limited military and subversive actions against South Korea using special forces and terrorist tactics; including aggressive skirmishes along the DMZ, overt attempts to assassinate South Korean leaders, kidnappings, the bombing of an airliner, and a failed effort in 1968 to foment an insurrection and conduct a guerrilla war in the South with more than 100 seaborne commandos; from the 1990s until 2010, the North lost two submarines and a semi-submersible boat attempting to insert infiltrators into the South (1996, 1998) and provoked several engagements in the Northwest Islands area along the disputed Northern Limit Line (NLL), including naval skirmishes between patrol boats in 1999 and 2002, the torpedoing and sinking of a South Korean corvette, the Cheonan, in 2010, and the bombardment of a South Korean Marine Corps installation on Yeonpyeong Island, also in 2010; since 2010, further minor incidents continue to occur periodically along the DMZ, where both the North and the South Korean militaries maintain large numbers of troops

in 2018, North Korea and South Korea signed a tension reduction agreement known as the Comprehensive Military Agreement (CMA), which established land, sea, and air buffer zones along the DMZ and the NLL; implementation of the CMA required the removal of some land mines and guard posts; the efforts led to a reduction of tension in the DMZ, but as of 2022 North Korea had failed to uphold much of its side of the agreement

NOTE: The information regarding Korea South on this page is re-published from the 2022 World Fact Book of the United States Central Intelligence Agency and other sources. No claims are made regarding the accuracy of Korea South 2022 information contained here. All suggestions for corrections of any errors about Korea South 2022 should be addressed to the CIA or the source cited on each page.