The Antarctica Service Medal (ASM) was established by the United States Congress on July 7, 1960, under Public Law 600 of the 86th Congress. The medal was intended as a military award to replace several commemorative awards which had been issued for previous Antarctica expeditions from 1928 to 1941. With the creation of the Antarctica Service Medal, the following commemorative medals were declared obsolete; Byrd Antarctic Expedition Medal Second Byrd Antarctic Expedition Medal United States Antarctic Expedition MedalThe Antarctica Service Medal is considered an award of the United States Armed Forces, issued in the name of the U.S. Department of Defense, and is authorized for wear on active duty uniforms. The medal may also be awarded to U.S. civilians and citizens of foreign nations who participate in a U.S. Antarctic expedition on the continent at the invitation of a participating U.S. agency (for example, National Science Foundation).The Arctic equivalents of the Antarctica Service Medal are the Army Arctic Tab, Navy Arctic Service Ribbon, the Coast Guard Arctic Service Medal and the Air Force Overseas Short Tour Service Ribbon with Arctic "A" Device. Source: Wikipedia (en)