National Defense Service Medal: Eligibility, GWOT Cutoff, and DD 214

National Defense Service Medal eligibility comes down to two things: you served during one of four designated periods, and you served honorably. The four windows are the Korean War (June 27, 1950 – July 27, 1954), the Vietnam War (January 1, 1961 – August 14, 1974), the Persian Gulf War (August 2, 1990 – November 30, 1995), and the Global War on Terrorism (September 11, 2001 – December 31, 2022).¹ No new qualifying period has been designated since the GWOT window closed, so anyone who entered service on or after January 1, 2023, is not eligible.²

Active Duty: One Day Is Enough

For active component service members, a single day of active duty falling inside a qualifying period earns the medal. There is no minimum length of service, no deployment requirement, and no need to have served in any particular theater.³

Two narrow categories of active duty do not count. Active duty performed solely to undergo a physical examination is excluded, and short active duty tours performed only to satisfy inactive duty training obligations are excluded as well.³

Reserve and National Guard Members

Beginning with the Gulf War period, eligibility was extended to members in good standing in the Selected Reserve, and reservists do not need to have been called to active duty to qualify.⁴ That extension was made permanent in 2003 and applies to every qualifying period going forward.⁵

The Selected Reserve covers actively drilling members of the Army Reserve, Navy Reserve, Marine Corps Reserve, Air Force Reserve, Coast Guard Reserve, Army National Guard, and Air National Guard. Members of the Individual Ready Reserve, Inactive National Guard, or Standby Reserve do not qualify on the basis of reserve status alone; they would need to have been separately called to active duty during a qualifying period.³

One consequence: Korean and Vietnam-era reservists who were never activated do not receive the NDSM under later rules. The Selected Reserve provision was not applied retroactively to pre-1990 service.

Honorable Service

Serving inside a qualifying window is necessary but not sufficient. Your character of service must be honorable, or general (under honorable conditions), evaluated at separation. Anything below that forfeits the award, even if you served part of an enlistment during a qualifying period.⁶

Academy Cadets and Midshipmen

Cadets and midshipmen at the service academies are on active duty under federal law, so they qualify if enrolled during a qualifying period. This mattered at the end of the GWOT window. Upperclassmen who entered before December 31, 2022 earned the medal; classmates who arrived after that date did not.

Service in More Than One Period

If you earned the NDSM during more than one qualifying period, you wear a 3/16-inch bronze service star on the ribbon and ribbon bar for each additional period.¹ A silver star replaces five bronze stars, though reaching that count would take service across all four periods and then some, and is exceptionally rare.⁷

The GWOT Window Is Closed

Defense Secretary Lloyd Austin signed a memo on August 30, 2022 setting December 31, 2022 as the termination date for the GWOT qualifying period, on the reasoning that the United States was no longer conducting large-scale combat operations tied to the September 11 attacks.⁸ Nothing has replaced it. For roughly two decades nearly every service member received the NDSM in basic training or at commissioning; that is no longer the case. Unless the Secretary of Defense designates a new period, service beginning January 1, 2023 or later does not qualify.²

If the Medal Is Missing From Your DD Form 214

The NDSM should be listed on your DD Form 214, the Certificate of Release or Discharge from Active Duty.⁹ It is one of the more commonly omitted awards, especially for shorter enlistments, because separation clerks sometimes overlook it.

If yours is missing it and you meet the eligibility rules above, submit DD Form 149 (Application for Correction of Military Record) to the Board for Correction of Military Records for your branch. Attach anything that establishes your active duty or Selected Reserve dates inside a qualifying period, such as orders or service records.¹⁰

Replacing a Lost Medal

Every recipient, or the immediate next of kin of a deceased recipient, is entitled to one free replacement of any military decoration. Requests go through your branch of service. Once your record is verified, the branch has 90 days to mail the medal, with all processing steps completed within one year. Additional replacements after the first may be provided at cost.¹¹

1
National Archives. Executive Order 10448 – Establishing the National Defense Service Medal
2
Air Force’s Personnel Center. National Defense Service Medal
3
govinfo. 32 CFR 578.23 – National Defense Service Medal
4
The American Presidency Project. Executive Order 12776 – Extending the National Defense Service Medal to Members of the Reserve
5
GovInfo. Executive Order 13293 – Amendment to Executive Order 10448, Establishing the National Defense Service Medal
6
U.S. National Archives. End of an Era – The National Defense Service Medal
7
Office of the Under Secretary of Defense for Personnel and Readiness. DoDM 1348.33, Volume 2 – Manual of Military Decorations and Awards
8
U.S. Coast Guard. National Defense Service Medal Award Termination Date
9
National Archives. DD Form 214 – Discharge Papers and Separation Documents
10
National Archives. Correcting Military Service Records
11
Office of the Law Revision Counsel. 10 USC 1135 – Replacement of Military Decorations