The National Defense Service Medal is a military service medal of the United States Military originally commissioned by President Dwight D. Eisenhower. Created in 1953, the National Defense Service Medal was intended to be a "blanket campaign medal"
June 27, 1950 to July 27, 1954 for campaign service during the Korean War
January 1, 1961 to August 14,1974 for campaign service during the Vietnam War.