Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. 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" awarded to any member of the United States military who served honorably during a designated time period of which a "national emergency" had been declared. As of 2010, with an issuance span of sixty years, the National Defense Service Medal is the oldest service medal still in circulation by the United States armed forces, followed second by the Armed Forces Expeditionary Medal which has been active since 1961. Combat and meritorious decorations (such as the Medal of Honor, Achievement Medals, and Commendation Medals) are older still but are classified under separate award criteria from service medals.