321st Field Artillery Regiment Unit Crest "Noli Me Tangere" (each) ngr 7th Cavalry Regiment Unit Crest

7th Cavalry Regiment Unit Crest "Garry Owen" (pair)

On the breast patch of the black pullover sweater

30th Infantry Regiment Crest  "Our Country Not Ourselves" "Rock of the Marne" (pair)

Army 18th Airborne Corps Unit Crest "Sky Dragons" (each)

321st Field Artillery Regiment Unit Crest "Noli Me Tangere" (each) ngr 7th Cavalry Regiment Unit Crest321st Field Artillery Regiment Unit Crest "Noli Me Tangere" (each). A distinctive unit insignia (DUI) is a metallic heraldic badge or device worn by soldiers in the United States Army. The DUI design is derived from the coat of arms authorized for a unit. DUIs may also be called "distinctive insignia" (DI) or, imprecisely, a "crest" or a "unit crest" by soldiers or collectors. The U. S. Army Institute of Heraldry is responsible for the design,