The Defense Meritorious Service Medal (DMSM) is the third-highest award bestowed upon members of the United States military by the United States Department of Defense. The medal is awarded in the name of the Secretary of Defense to members of the Armed Forces who, while serving in a joint activity, distinguish themselves by non-combat outstanding achievement or meritorious service, but not of a degree to warrant award of the Defense Superior Service Medal. Makers marked by US manufacturer.