United Nations Forces in the Korean War

After the outbreak of Korean War on 25 June 1950, 16 countries (deploying / arrival order): United States, United Kingdom, Australia, Netherlands, Canada, France, New Zealand, Philippines, Turkey, Thailand, South Africa, Greece, Belgium, Luxembourg, Ethiopia and Colombia provided combat troops for South Korea and they organized the United Nations Forces.

Instruction
Source of statistics in this article is the official book about Korean War statistics published by South Korean Ministry of National Defense Institute for Military History in June 2014.

Statistics in this article may differ from the statistics of each countries.

United States

 * Units:
 * U.S. Army:
 * U.S. Navy:
 * U.S. Air Force:
 * U.S. Marine Corps: 1st Marine Division and so on.
 * Deployment: 27 June 1950 (Air Force, Navy), 1 July 1950 (Army)
 * First Battle: 5 July 1950
 * Withdrawal: October 1954 (main force)
 * Participants: Total about 1,789,000
 * Casualties
 * As of 2023, MIAs and Unaccounted Remains: 7,428
 * As of 2022, according to the list of Wall of Remembrance in the Korean War Veterans Memorial, killed soldiers were 36,634. But this figure fluctuate depending on the ongoing correction of list.
 * As of 2021, United States Department of Veterans Affairs
 * Killed: 36,574 (Battle Deaths: 33,739, Other Deaths: 2,835)
 * Wounded: 103,284
 * As of 2014

Mexicans and Puerto Ricans
Many Mexicans and Puerto Ricans served in the United States Army during the Korean War.

United Kingdom

 * Units:
 * British Army: 1st Commonwealth Division, 27th Infantry Brigade, 28th Commonwealth Infantry Brigade, 29th Infantry Brigade and so on.
 * Royal Navy: 1st Aircraft Carrier Squadron
 * Royal Marines: 41 Independent Commando
 * Deployment: 1 July 1950 (Navy), 28 August 1950 (Army)
 * First Battle: 4 September 1950
 * Withdrawal: March 1955 (Navy), 1954–1957 (Army)
 * Participants: Total about 56,000
 * Casualties

Australia

 * Units:
 * Australian Army: Royal Australian Regiment and so on.
 * Australian Navy: Aircraft carrier (1), Destroyer (2), Frigate (1)
 * Australian Air Force: No. 91 (Composite) Wing RAAF
 * Deployment: 1 July 1950 (Air Force, Navy), 27 September 1950 (Army)
 * First Battle: 5 October 1950
 * Withdrawal: November 1953 (Air Force),1955 (Navy), 24 March 1956 (Army)
 * Participants: Total 17,164
 * Casualties

Netherlands

 * Units:
 * Royal Netherlands Army: Regiment van Heutsz
 * Royal Netherlands Navy: Destroyer (1)
 * Deployment: 19 July 1950 (Navy), 23 November 1950 (Army)
 * First Battle: 11 December 1950
 * Withdrawal: 9 October, 9 November, 6 December 1954 (Army), 24 January 1955 (Navy)
 * Participants: Total 5,322
 * Casualties

Canada

 * Units:
 * Canadian Army: Royal Canadian Regiment and so on.
 * Royal Canadian Navy: Destroyer (3)
 * Royal Canadian Air Force: 426 Transport Training Squadron
 * Deployment: 28 July 1950 (Air Force), 30 July 1950 (Navy), 18 December 1950 (Army)
 * First Battle: 15 February 1951
 * Withdrawal: July 1953 (Air Force), September 1955 (Navy), June 1957 (Army)
 * Participants: Total 26,791
 * Casualties

France

 * Units:
 * French Army: French Battalion
 * French Navy: French aviso La Grandière
 * Deployment: 29 July 1950 (Navy), 29 November 1950 (Army)
 * First Battle: 13 December 1950
 * Withdrawal: December 1950 (Navy), 22 October 1953 (Army)
 * Participants: Total 3,421
 * Casualties

New Zealand

 * Units:
 * New Zealand Army: Royal Regiment of New Zealand Artillery
 * Royal New Zealand Navy: Frigate (6)
 * Deployment: 30 July 1950 (Navy), 31 December 1950 (Army)
 * First Battle: 28 January 1951
 * Withdrawal: 2 March 1954 (Navy), 8 November 1954 (Army)
 * Participants: Total 3,794
 * Casualties

Philippines

 * Units:
 * Philippine Army: Philippine Expeditionary Forces to Korea
 * Deployment: 19 September 1950
 * First Battle: 1 October 1950
 * Withdrawal: 13 May 1955
 * Participants: Total 7,420
 * Casualties

Turkey

 * Units:
 * Turkish Army: Turkish Brigade
 * Deployment: 17 October 1950
 * First Battle: 12 November 1950
 * Withdrawal: Summer 1954 (main force), 27 June 1971
 * Participants: Total 21,212
 * Casualties

Thailand

 * Units:
 * Royal Thai Army: 21st Infantry Regiment, Queen Sirikit's Guard
 * Royal Thai Navy: Frigate (7), Troopship (1)
 * Royal Thai Air Force: Transport Aircraft Squadron
 * Deployment: 7 November 1950 (Army, Navy), 18 June 1951 (Air Force)
 * First Battle: 22 November 1950
 * Withdrawal: 1954 (Army) – main force, January 1955 (Navy), 6 November 1964 (Air Force), 23 June 1972 (Army)
 * Participants: Total 6,326
 * Casualties

South Africa

 * Units:
 * South African Air Force: 2 Squadron SAAF
 * Deployment: 12 November 1950
 * First Battle: 19 November 1950
 * Withdrawal: 29 October 1953
 * Participants: Total 826
 * Casualties

Greece

 * Units:
 * Hellenic Army: Greek Expeditionary Force
 * Hellenic Air Force: 13th Flight – CTransport Aircraft C-47 (7)
 * Deployment: 1 December 1950 (Air Force), 9 December 1950 (Army)
 * First Battle: 5 January 1951
 * Withdrawal: April 1955 (Air Force), 22 January 1956 (Army) – main force, December 1955 (Army)
 * Participants: Total 4,992
 * Casualties

Belgium

 * Units:
 * Belgian Army: Belgium-Luxembourg Battalion
 * Deployment: 31 January 1951
 * First Battle: 6 March 1951
 * Withdrawal: 15 June 1955
 * Participants: Total 3,498
 * Casualties

Luxembourg

 * Units:
 * Luxembourg Army: Belgium-Luxembourg Battalion
 * Deployment: 31 January 1951
 * First Battle: 13 March 1951
 * Withdrawal: 7 January 1953
 * Participants: Total 100
 * Casualties

Ethiopia

 * Units:
 * Ethiopian Ground Forces: Kagnew Battalion
 * Deployment: 6 May 1951
 * First Battle: 11 July 1951
 * Withdrawal: 3 March 1965
 * Participants: Total 3,518
 * Casualties

Colombia

 * Units:
 * Colombian Army: Colombian Battalion
 * Colombian Navy: Frigate (1)
 * Deployment: 8 May 1951 (Navy), 15 June 1951 (Army)
 * First Battle: 1 August 1951
 * Withdrawal: 29 October 1954 (Army), 11 October 1955 (Navy)
 * Participants: Total 5,100
 * Casualties