|Veterans have prized military challenge coins dating back to World War I, when military medallions were issued to battalions as symbols of camaraderie and unity. Over time the 'challenge' came in a Veteran or service member having a coin to show proof of membership in a campaign, battle, group or event. Medals of America has a large selection of military challenge coins for whatever military service branch a veteran was a part of, whether Army, Navy, Air Force, Marine, or Coast Guard. Our military medallions range from the Great Seal Medallion, and USMC Brass Medallion to the Air Force Medallion. Veterans can also display their challenge coins proudly in military display cases. These military medallions and challenge coins are built with great quality, so veterans can celebrate these symbols of duty, honor and country for a lifetime.