Special Troops Battalion 4th Brigade Combat Team (4th BCT-STB) Crest "Swift Agile and Lethal" (each) Out of stock United States Army Drill Sergeant

United States Army Drill Sergeant Challenge Coin

1st Cavalry Division Challenge Coin

503rd Military Police Battalion Unit Crest "Protect Assist Enforce" (each)

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Special Troops Battalion 4th Brigade Combat Team (4th BCT-STB) Crest "Swift Agile and Lethal" (each) Out of stock United States Army Drill SergeantSpecial Troops Battalion 4th Brigade Combat Team (4th BCT STB) Crest "Swift Agile and Lethal" (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