Issued to U.S. armed forces personnel as an attachment to the Armed Forces Reserve Medal. The Hourglass Device denotes total service as a member of the Reserve or National Guard and is issued in three degrees. The initial presentation of the Armed Forces Reserve Medal is authorized with the bronze hourglass device denoting ten years of reserve service. At 20 years of service, the hourglass is upgraded to silver and at 30 years the hourglass becomes gold. For those who complete 40 years of reserve service, a gold and bronze hourglass device are worn simultaneously. This is the only case where hourglasses are worn together; in all other cases the hourglass device is upgraded to the next higher award degree and is worn as a single device. Prior to 1995, the hourglass device was presented only upon the second and subsequent awards of the Armed Forces Reserve Medal, as in a bronze hourglass for 20 years of service, silver for 30, and gold for 40. This was changed when the Armed Forces Reserve Medal was authorized for award, without a device, to those who had been mobilized to active duty. At that point, the hourglass device was presented for the initial ten year award to distinguish those who had received the award through years of service compared to those who had earned the decoration through mobilization. The change in the awarding criteria for the Hourglass Device applied only to those personnel who had not yet received the Armed Forces Reserve Medal or had received the decoration before 1995 and were still serving on active duty or as a member of the reserves. Personnel discharged or retired, prior to the change of the Hourglass Device award criteria, are not eligible for a correction of records or an upgrade of the Hourglass Device, as the Hourglass Device would have originally been presented under the original award specifications.er
oak leaf clusters are worn to the wearer's right of the bronze oak
leaf clusters on the same ribbon.