United Nations Command
The United Nations Command (UNC) is the unified command structure for the multinational military forces, established in 1950, supporting South Korea (the Republic of Korea or ROK) during and after the Korean War.
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The United Nations Command and the Chinese-North Korean Command signed the Korean Armistice Agreement on 27 July 1953, ending the heavy fighting. The armistice agreement established the Military Armistice Commission (MAC), consisting of representatives of the two signatories, to supervise the implementation of the armistice terms, and the Neutral Nations Supervisory Commission (NNSC) to monitor the armistice's restrictions on the parties' reinforcing or rearming themselves. The North Korean-Chinese MAC was replaced by Panmunjom representatives under exclusive North Korean management. Regular meetings have been stopped, although duty officers of the Joint Security Area (commonly known as the Truce Village of Panmunjom) from each side met regularly. On November 6, 2018, it was announced that the UNC would transfer primary guard duties of the now demilitarized Joint Security Area to both North and South Korea.
The resolutions suggested the forces under the UNC were "United Nations forces", and the United Nations itself could be considered a belligerent in the war. However, in practice the United Nations exercised no control over the combat forces. These were controlled by the United States, which supplied more men (and suffered more casualties) than any other of the nations which came to the war. Most observers concluded that the forces under the UNC were not in law United Nations troops, and the acts of the UNC were not the acts of the United Nations. In fact, the General Assembly "considers that it is necessary to dissolve the 'United Nations Command' and withdraw all the foreign troops stationed in South Korea under the flag of United Nations". The UNC can be regarded as an alliance of national armies, operating under the collective right of self-defense. United Nations Security Council Resolution 84 authorized the use of the United Nations flag concurrently with the flags of the participating UNC nations.
In 1994, UN Secretary General Boutros Boutros-Ghali wrote in a letter to the North Korean Foreign Minister that:
the Security Council did not establish the unified command as a subsidiary organ under its control, but merely recommended the creation of such a command, specifying that it be under the authority of the United States. Therefore the dissolution of the unified command does not fall within the responsibility of any United Nations organ but is a matter within the competence of the Government of the United States.
Establishment in 1950
After troops of North Korea invaded South Korea on June 25, 1950, the United Nations Security Council adopted Resolution 82 calling on North Korea to cease hostilities and withdraw to the 38th parallel.
On June 27, 1950, it adopted Resolution 83, recommending that members of the United Nations provide assistance to the Republic of Korea "to repel the armed attack and to restore international peace and security to the area".
The first non-Korean and non-US unit to see combat was No. 77 Squadron, Royal Australian Air Force, which began escort, patrol and ground attack sorties from Iwakuni, Japan on 2 July 1950. On 29 June 1950, the New Zealand government ordered two Loch class frigates – Tutira and Pukaki to prepare to make for Korean waters, and for the whole of the war, at least two NZ vessels would be on station in the theater. On 3 July, Tutira and Pukaki left Devonport Naval Base, Auckland. They joined other Commonwealth forces at Sasebo, Japan, on 2 August.
United Nations Security Council Resolution 84, adopted on July 7, 1950, recommended that members providing military forces and other assistance to South Korea "make such forces and other assistance available to a unified command under the United States of America".
President Syngman Rhee of the Republic of Korea assigned operational command of ROK ground, sea, and air forces to General MacArthur as Commander-in-Chief UN Command (CINCUNC) in a letter (the "Pusan Letter") of July 15, 1950:
In view of the common military effort of the United Nations on behalf of the Republic of Korea, in which all military forces, land, sea and air, of all the United Nations fighting in or near Korea have been placed under your operational command, and in which you have been designated Supreme Commander United Nations Forces, I am happy to assign to you command authority over all land, sea, and air forces of the Republic of Korea during the period of the continuation of the present state of hostilities, such command to be exercised either by you personally or by such military commander or commanders to whom you may delegate the exercise of this authority within Korea or in adjacent seas.
On August 29, 1950, the British Commonwealth's 27th Infantry Brigade arrived at Busan to join UNC ground forces, which until then included only ROK and U.S. forces. The 27th Brigade moved into the Naktong River line west of Daegu.
Units from other countries of the UN followed: Belgian United Nations Command, Canada, Colombia, Ethiopia, France, Greece (15th Infantry Regiment), Luxembourg, the Netherlands, New Zealand (16th Field Regiment, Royal New Zealand Artillery), the Philippines (Philippine Expeditionary Forces to Korea), South Africa (No. 2 Squadron SAAF), Thailand and the Turkish Brigade. Denmark, India, Norway and Sweden provided medical units. Italy provided a hospital, even though it was not a UN member. Iran provided medical assistance from the Iranian military's medical service.
On 1 September 1950 the United Nations Command had a strength of 180,000 in Korea: 92,000 were South Koreans, the balance being Americans and the 1,600-man British 27th Infantry Brigade.
During the three years of the Korean War, military forces of these nations were allied as members of the UNC. Peak strength for the UNC was 932,964 on July 27, 1953, the day the Armistice Agreement was signed:
- Combat forces
- South Korea – 590,911
- United States – 302,483
- Australia – 17,000
- United Kingdom – 14,198
- Thailand – 6,326
- Canada – 6,146
- Turkey – 5,453
- Philippines – 1,468
- New Zealand – 1,385
- Ethiopia – 1,271
- Greece – 1,263
- France – 1,119
- Colombia – 1,068
- Belgium – 900
- South Africa – 826
- Netherlands – 819
- Luxembourg – 44
- Humanitarian aid (not counted in total above)
The commanders of the UNC were: Douglas MacArthur, Matthew B. Ridgway, and Mark Wayne Clark. John E. Hull was named UNC commander to carry out the cease-fire (including the voluntary repatriation of prisoners of war) after the armistice was signed.
In early July 1950, amid the confusion of the first days of the war, Seoul placed its armed forces under the command of General Douglas MacArthur as United Nations (UN) commander. This arrangement continued after the armistice. For some twenty-five years, the United Nations Command headquarters, which had no South Korean officers in it, was responsible for the defense of South Korea, with operational control over a majority of the units in the Republic of Korea Armed Forces, the South Korean military. The command was the primary peacetime planning organization for allied response to a North Korean invasion of South Korea and the principal wartime command organization for all South Korean and United States forces involved in defending South Korea.
On November 7, 1978 a binational headquarters, the Republic of Korea – United States Combined Forces Command (CFC), was created, and the South Korean military units with front-line missions were transferred from the UN Command to the CFC's operational control. The commander in chief of the CFC, a United States military officer, answered ultimately to the national command authorities of the United States and that of South Korea.
In 1994, all South Korean forces were returned to the operational control of the South Korean government. South Korean forces were severed from CFC during the continued Armistice period and the CFC Commander was no longer ultimately responsible for the fighting readiness of South Korean forces. South Korea, as a sovereign nation, assumed this responsibility.
Under the law, the Commander of United States Forces Korea, is dual-hatted as Commander of the ROK-U.S. CFC. The Deputy Commander is a four-star general from the South Korean army, who is also dual-hatted as the ground forces component commander.
The CFC has operational control over more than 600,000 active-duty military personnel of all services, of both countries. In wartime, augmentation could include some 3.5 million South Korean reservists as well as additional U.S. forces deployed from outside South Korea. If North Korea were to invade South Korea, the CFC would provide a coordinated defense through its Air, Ground, Naval and Combined Marine Forces Component Commands and the Combined Unconventional Warfare Task Force. In-country and augmentation U.S. forces would be provided to the CFC for employment by the respective combat component.
The transfer of wartime control of the defense of South Korea to the South Korean government has been discussed periodically. As long as South Korea’s KAMD and Kill Chain pre-emptive strike system remain in development, full operational control transfer will likely be postponed.
In May 2018, Canadian Lt. General Wayne Eyre became the first non-American to serve as deputy commander of the UNC.
United Nations Command-Rear is located at Yokota Air Base, Japan and is commanded by a Royal Australian Air Force group captain with a deputy commander from the Canadian Forces. Its task is to maintain the SOFA that permits the UNC to retain a logistics rear and staging link on Japanese soil.
Transfer of Joint Security Area
On November 6, 2018, it was announced that the UNC had agreed to allow North and South Korea to take command of security personnel stationed on their respective sides of the now demilitarized Joint Security Area.
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UN Secretary General Boutros Boutros Ghali noted in his letter to the Foreign Minister of the DPRK, dated 24 June 1994: I do not believe, though, that any principal organ of the United Nations, including the Secretary General, can be the proper instance to decide on the continued existence or the dissolution of the United Nations Command. However, allow me to recall that the Security Council, in operative paragraph 3 of resolution 84 (1950) of 7 July 1950, limited itself to recommending that all members providing military forces and other assistance to the Republic of Korea 'make such forces and other assistance available to a unified command under the United States of America'. It follows, accordingly, that the Security Council did not establish the unified command as a subsidiary organ under its control, but merely recommended the creation of such a command, specifying that it be under the authority of the United States. Therefore the dissolution of the unified command does not fall within the responsibility of any United Nations organ but is a matter within the competence of the Government of the United States.
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