Republic of Korea Armed Forces in the context of "Republic of Korea Army"

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 president of the Republic of Korea (Korean: 대한민국 대통령), also known as the president of South Korea (한국 대통령), is the head of state and head of government of South Korea. The president directs the executive branch of the government and is the commander-in-chief of the Republic of Korea Armed Forces.

The Constitution of South Korea and the amended Presidential Election Act of 1987 provide for election of the president by direct, secret ballot, ending sixteen years of indirect presidential elections under the preceding two authoritarian governments. The president is directly elected to a five-year term, with no possibility of re-election. If a presidential vacancy should occur, a successor must be elected within sixty days, during which time presidential duties are to be performed by the prime minister or other senior cabinet members in the order of priority as determined by law. The president is exempt from criminal liability (except for insurrection or treason).

The Korean People's Army (KPA; Korean: 조선인민군; MR: Chosŏn inmin'gun) encompasses the combined military forces of North Korea and the armed wing of the Workers' Party of Korea (WPK). The KPA consists of five branches: the Ground Force, the Naval Force, the Air Force, the Strategic Force, and the Special Operations Forces. It is commanded by the WPK Central Military Commission, which is chaired by the WPK general secretary, and the president of the State Affairs; both posts are currently headed by Kim Jong Un.

The KPA considers its primary adversaries to be the Republic of Korea Armed Forces and United States Forces Korea, across the Korean Demilitarized Zone, as it has since the Armistice Agreement of July 1953. As of 2021 it is the second largest military organisation in the world, with 29.9% of the North Korean population actively serving, in reserve or in a paramilitary capacity.

ROK/US Combined Forces Command (CFC) is a joint warfighting headquarters comprising the Republic of Korea Armed Forces and United States Forces Korea. It was established in 1978. During wartime it would serve as the operational command headquarters for all of the South Korean and U.S. ground, air, sea (including Marine) and special operations forces fighting on the Korean peninsula. Since November 2022 CFC has been headquartered at Camp Humphreys, in Pyeongtaek, Korea. Previously it was headquartered at Yongsan Garrison in Seoul.

The CFC is commanded by a four-star U.S. Army general, with a four-star ROK Army general as deputy commander. This pattern exists throughout the CFC command structure: if the chief of a staff section is Korean, the deputy is American and vice versa.

The Gwangju Democratization Movement, also known in South Korea as May 18 Democratization Movement (Korean: 오일팔 민주화운동; RR: Oilpal minjuhwaundong; lit. Five One Eight Democratization Movement), was a series of student-led demonstrations that took place in Gwangju, South Korea, in May 1980, against the coup of Chun Doo-hwan. The uprising was violently suppressed by the South Korean military in a massacre.

Prior to the uprising, at the end of 1979, the coup d'état of May Seventeenth resulted in the installation of Chun Doo-hwan as military dictator and the implementation of martial law. Following his ascent to power, Chun arrested opposition leaders, closed all universities, banned political activities, and suppressed the press.

The Republic of Korea Navy (ROKN; Korean: 대한민국 해군; Hanja: 大韓民國海軍), also known as the ROK Navy is the naval warfare service branch of the South Korean armed forces, responsible for naval and amphibious operations. The South Korean navy includes the Republic of Korea Marine Corps, which functions as a branch of the Navy. The ROK Navy has about 80,000 regular personnel including 30,000 Republic of Korea Marines. There are about 262 commissioned ships in the ROK Navy. The naval aviation force consists of about 88 fixed-wing and rotary-wing aircraft. The ROK Marine Corps has about 300 tracked vehicles including assault amphibious vehicles.

The Republic of Korea Navy was established as the Marine Defense Group on November 11, 1945, after Korea was liberated from the Empire of Japan on August 15, 1945. Since the Korean War, the South Korean navy had concentrated its efforts on building naval forces to counteract hostilities of North Korea. As South Korea's economy grew, the ROK Navy was able to locally build larger and better equipped fleets to deter aggression, to protect the sea lines of communication, and to support the nation's foreign policy. As part of its mission, the ROK Navy has engaged in several peacekeeping operations since the turn of the 21st century. The ROK Navy aims to become a blue-water navy in the 2020s.