United Nations Korea MedalUnited Nations Korea Medal Full size medal Unmounted with 15cm ribbon as required for swing mounting. Miniature size medal Unmounted with 10cm ribbon as required for swing mounting. The United Nations Service Medal (Korea) is awarded to those members who were posted for any period with the United Nations (UN) forces in Korea between 27 June 1950 and 27 July 1954. The medal is also awarded to personnel who served in adjacent areas like Japan and