The United Nations Service Medal (Korea) is awarded to any military service member, of an Armed Force allied with South Korea, who participated in the defense of South Korea from North Korea between the dates of June 27, 1950 and July 27, 1954. The military forces of the Netherlands are awarded the medal for service to January 1, 1955, while the armed forces of Thailand and Sweden grant the award to July 27, 1955.
International Red Cross personnel engaged for service during the war with any United Nations relief team in Korea were not eligible for the medal.
The ultimate award authority of the United Nations Service Medal is United Nations Commander-in-Chief of military forces in Korea. Most countries consider the United Nations Service Medal an automatic decoration, if some other Korean service award was bestowed, and generally award the medal without requesting permission through United Nations channels. For instance, in the United States Armed Forces, any service member awarded the Korean Service Medal is automatically granted the United Nations Service Medal.