Rams Norwich Silver & Gold Crest (each) ngr Distinctive unit insignia (DUI) of

Distinctive unit insignia (DUI) of a design approved by The Institute of Heraldry

11th Armored Cavalry Regiment Challenge Coin

101st Airborne Division Challenge Coin

101st Airborne Crest (each)

Army Corps Of Engineers Castle Challenge Coin

Rams Norwich Silver & Gold Crest (each) ngr Distinctive unit insignia (DUI) ofRams Norwich Silver & Gold Crest (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, development and authorization of