US Army Second 2nd Infantry Division Challenge Coin Combat Airborne. Dimensions 40mm. Come with case. Fast shipping. This is a great tribute to the US Army's 2nd INFANTRY DIVISION and their motto "Second To None". Front side pictures an Indian chief inside the white star and black background outlined in polished gold. Reverse is all highly polished gold finish with the US ARMY Seal. Coin has reeded edges and is about 1 9/16" in diameter. All details are raised lettering. Coin is contained in an acrylic coin holder. The 2nd Infantry Division ("Indianhead") (2ID or 2nd ID) is a formation of the United States Army. Its current primary mission is the defense of South Korea in the initial stages of an invasion from North Korea until other American units can arrive. There are approximately 17,000 soldiers in the 2nd Infantry Division, with 10,000 of them stationed in South Korea, accounting for about 35% of the United States Forces Korea personnel.