National Defense Service Medal

BACK DEVICE(s)

Description:

1. Authorized by Executive Order. 10448, as amended and Executive Order 12776
2. The National Defense Service Medal (NDSM) was established by President Eisenhower per Executive Order 10448, dated 22 April 1953, for service between 27 June 1950 and a date to be announced. On 17 June 1954, the Chief of Staff approved establishment of 27 July 1954 as the termination date for award of the NDSM. Executive Order 11265, dated 11 January 1966, amended Executive Order 10488, to include a termination date and authorized the Secretary of Defense to establish periods of eligibility subsequent to 31 December 1960.
   
   Eligibility for award, commencing with the period after 31 December 1960, was established by DOD Directive 1348.7, dated 1 April 1966, and terminated effective 15 August 1974, per letter from Manpower and Reserve Affairs, subject: Termination of Eligibility for the National Defense Service Medal, dated 30 June 1974. 
   
   The NDSM was again authorized by memorandum, dated 20 February 1991, from Secretary of Defense Cheney for active service on or after 2 August 1990 with no termination date established. The termination date was later established as 30 November 1995.

The Office of the Under Secretary for Personnel and Readiness maintains a list of "Approved Military Decorations and Awards" which is a roster of the approved Joint DoD awards and/or operations for which the medal is authorized.
This is the National Defense Service Medal approved award/operations. as of the date shown in the document. You may want to verify if it has been updated at The Office of the Under Secretary for Personnel and Readiness (linked above)