A gold color metal and enamel device 1 1/4 inches (3.18cm) in height consisting of two gold swords in saltire surmounted at center by a white dragon's wing charged with a red cross throughout and issuant above the wing between the sword points a blue fleur-de-lis and below the wing between the swords hilts a gold seven-pointed star, all on a background of gold concentric rays and enclosed by a continuous maroon scroll inscribed in gold with the worlds "SERVICE" at left, "TO THE" above the fleur-de-lis and "FINEST" on the right and charged at bottom center with two white five-pointed stars.
The design symbolizes some of the highlights of the military medical career of Major General George C. Dunham, for whom the Hospital, the major subordinate organization of the Medical Activity, was named. The swords denote service during both World Wars and the fleur-de-lis is for France where he was wounded while in command of a World War I evacuation hospital. The dragon's wing is from the coat of arms of London, England where the then Major Dunham distinguished himself as a student of tropical medicine and hygiene. The red cross, further symbolic of the medical profession and the white of the wing allude to his "wide knowledge of hygiene, practical sanitation and public health, and his skill at organizing courses of instruction in sanitation." The seven-pointed star in base refers to the seven decorations he received from nations of Latin-America where he served on special mission during World War II. During this time the General earned his own country's Distinguished Service Medal (indicated by the colors, red, white, blue) and was promoted to the rank of Major General, signified by the two stars on the scrolls below. The rays of the background contained by the maroon scroll symbolize the General's dedication to the medical profession and to the service of his country.
The distinctive unit insignia was originally approved for the Dunham Army Hospital on 21 Nov 1969. It is redesignated for the U.S. Army Medical Department Activity, Carlisle Barracks on 22 Aug 1973.