A gold color metal and enamel device 1 3/16 inches (3.02 cm) in height overall consisting of a white Greek cross bearing a maroon lozenge charged with three five-pointed gold stars in triangle above two gold bars all below a gold demi-sun, with alternate straight and curved rays issuing from the lateral arms of the cross, all within a continuous maroon scroll, lined gold, arced across top and base and inscribed "CARE FOR MAN" at the top and "AND COUNTRY" in base, all in gold letters.
Maroon and white are the colors traditionally associated with the Medical Corps. The cross symbolizes aid, assistance and compassion. The lozenge, whose angles highlight the cardinal points of a compass, emphasizes constancy and dependability, while underscoring the far-reaching scope of the unit's mission. The three stars and two bars within the lozenge are adapted from the coat of arms of George Washington. The flag of the District of Columbia, the home of the unit, consists of the same three stars and bars. The sun, adapted from the Army National Guard crest for the District of Columbia, alludes to hope and healing.
The distinctive unit insignia was originally approved for the 115th Evacuation Hospital on 28 September 1971. It was redesignated for the 115th Combat Support Hospital on 17 June 1974. The insignia was redesignated for the 115th Surgical Hospital with the description and symbolism revised effective 1 August 1983.