National Defense Service Ribbon Mil-thin
MIL-THIN VERSION OF THE National Defense Service RIBBON
often abbreviated on DD214 as NDSM
Qualifying Dates: 1950-54, 1961-74, 1990-95, 2001-TBD
Criteria: Any honorable active duty service during any of the above periods.
Until 1987, Army only used a bronze oak leaf cluster to denote an additional award. At this time, it began using bronze stars as the other services did.