13th Cavalry Regiment Unit Crest (Each) EOD US Army Engineer Regimental Crest

US Army Engineer Regimental Crest

7th  Infantry Regiment Unit Crest "Volens Et Potens" (pair)

followed by a number representing the rank

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

Infantry Officer Brite Pin-on

13th Cavalry Regiment Unit Crest (Each) EOD US Army Engineer Regimental CrestA 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 all DUIs. Distinctive unit insignia (DUI)