Maroon, the primary color used for Army Medical Department units, is employed as the background for the scroll encompassing the 339th Combat Support Hospital Distinctive Unit Insignia, better known as a unit crest of a DUI. “Save Serve Support,” the text inside the scroll, is the unit motto. In the insignia’s center is a cross of red, a reference to the Hospital and its missions. Near the base, a blue fleur-de-lis is a reference to the unit’s service in France during World War I, while he heraldic rose in the center of the cross is an allusion to service in England during World War II.
The triangle containing the fleur-de-lis is a visual reference to the “Golden Triangle,” a symbol for the city of Pittsburgh that alludes to the location where the Allegheny and Monongahela rivers merge and then unite to form the Ohio River at a point of a triangle in which the city’s business district is located.
Pittsburgh was the original home of the 339th General Hospital, ancestral unit of the 339th Combat Support Hospital, and this insignia was approved for wear by its members on 18 July 1969. It was redesignated for the 339th Combat Support Hospital on 15 July 1997.
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The Distinctive Unit Insignias is 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.