This decoration was instituted by Congress on July 9, 1918 for the Army.
Awarded for exceptionally meritorious and distinguished services to the Government of the United States, in a duty of great responsibility. It may be awarded to both military and civilians, foreign and domestic.
For follow-up actions that qualify for this award, a bronze and/or silver oak cluster is awarded, to be worn on the ribbon.
The "C" Device, or "Combat Device" may be placed to denote meritorious service or achievement while in combat.
The medal is a circular design containing the U.S. Coat of Arms encircled by a blue ring with the inscription, FOR DISTINGUISED SERVICE MCMXVIII.
In the center of the reverse of the medal, amidst several flags and weapons , is a blank scroll for engraving the awardees name.
The ribbon has a central wide white stripe edged with blue and an outer red band representing the colors of the U.S. flag.