Service: All Services
Criteria: 10 years of honorable service in any reserve component of the United States Armed Forces Reserve or award of “M” device.
Devices: Bronze, Silver and Gold Hourglass, Bronze Letter “M” , Bronze Numeral
Authorized in 1950 for 10 years of honorable and satisfactory service within a 12 year period as a member of one or more of the Reserve Components of the Armed Forces of the United States.
An executive order of Aug. 8, 1996 authorized the award of a bronze letter “M” mobilization device to U.S. reserve component members who were called to active-duty service in support of designated operations on or after August 1, 1990 (the M device was not authorized for any operations prior to August 1, 1990 although it had been previously proposed).