Until 2019, United States Army Medical Command was responsible for the command and control for the Army’s brick-and-mortar facilities that delivered medical, dental, and veterinary care and treatment, as well as for overseeing medical research and development and the operation of training institutions. On October 1st of that year, the operational and administrative control of military medical facilities, including those dedicated to veterans, was transferred to the Defense Health Agency.
The Army Medical Command Distinctive Unit Insignia was originally approved for the U.S. Army Health Services Command on 26 January 1973. It was redesignated for the U.S. Army Medical Command on 2 October 1994 with a revised description and symbolism. It features the maroon cross so commonly seen in insignias for medical units; maroon is one of the branch colors for Army Medicine, and the cross is associated with medical care and assistance. Above the cross is a lamp, denoting vigilant service, and the white rays emerging from the cross, when combined with the four points of the cross, an eight-pointed compass rose as an allusion to the worldwide scope of Medical Command. Two serpents, inspired by the imagery of the caduceus adopted as the branch insignia of the Army Medical Corps, are symbols of wisdom, renewal, prudence, and convalescence. "Responsive And Dedicated" is the Command's motto.
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Distinctive Unit Insignias are worn by all Soldiers (except General Officers) in units that have been authorized to be issued the device. It is worn centered on the shoulder loops of the Army Green Service Uniform (AGSU) and the blue Army Service Uniform (ASU, Enlisted only) with the base of the insignia toward the outside shoulder seam. DUIs are not worn on the Dress variations of either uniform, however.
More guidance on wear of the DUI is found in DA Pamphlet 670-1, Section 21-22, "Distinctive unit insignia" and 21–3(d) and (e), "Beret" and "Garrison Cap," respectively.