The Marine Corps Expeditionary Medal is a military award of the United States Marine Corps. It was established on 8 May 1919 as the Marine Corps Expeditionary Ribbon. A full-sized medal was authorized on 1 March 1921 by Presidential Order of Warren G. Harding. The Marine Corps Expeditionary Medal is therefore one of the oldest medals of the United States military which is still issued to active duty personnel.
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