A silver color metal and enamel device 1 3/16 inches (3.02 cm) in height overall consisting of a maroon St. Andrew's cross (saltire), the ends couped (cut off at right angles) bearing saltirewise a silver saber point up, and a silver sprig of foxglove all above a convex silver motto scroll inscribed "VIVE" in maroon letters.
The cross (saltire) is a symbol of aid, assistance and support and with the foxglove, the source of digitalis, and the saber, alludes to the medical and military nature of the organization. The motto "VIVE" (Live) expresses the unit's basic and guiding purpose. Maroon and white (silver) are the colors for the Army Medical Department.
The distinctive unit insignia was originally approved for the 3d Station Hospital on 21 October 1942. It was redesignated for the 312th Evacuation Hospital and revised to change the description and symbolism on 6 April 1971. The insignia was redesignated effective 16 September 1993, for the 312th Field Hospital, with the description revised.