the "M" device are awarded, the hourglass(es) shall be positioned in first position on the ribbon (at the wearer's right), the "M" device in middle position, and the number of times the "M" device has been awarded in the remaining position (at the wearer's left). Authorized Operation The table below lists designated U.S. military operations that have been approved for award of the "M’ device on the AFRM, provided the member meets other award criteria designated contained in DoDM 1348.33, Volume 2, Manual of Military Decorations and Awards: DoD Service Awards – Campaign, Expeditionary, and Service Medals. The Military Departments are responsible for determining individual eligibility for the "M" device based on award criteria. Please refer individual eligibility questions to your respective Military Department. References External links Department of The Army Institute of Heraldry website Armed Forces Reserve Medal Military awards and decorations of the United States Awards established in 1950 1950 establishments in the United States Long service medals Medal