United Nations Service Medal for Korea - unnamed as issued with mounting pin The United Nations Service Medal for Korea is an international military decoration established by the United Nations on December 12, 1950 as the United Nations Service Medal. The decoration was the first international award ever created by the United Nations and recognized the multi-national defense forces which participated in the Korean War. 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.