U.S. Army 278th Armored Cavalry Regiment "I Volunteer Sir" Crest private 1st Marine Division OCP Patch

1st Marine Division OCP Patch with Hook Fastener (pair)

NWUIII Don't Tread On Me Shoulder Patch W/ Hook Fastener

I (1st) Corps OCP Patch W/ Hook Fastener

Army Jungle Expert OCP Patch with Hook Fastener

U.S. Army 278th Armored Cavalry Regiment "I Volunteer Sir" Crest private 1st Marine Division OCP PatchU. S. Army 278th Armored Cavalry Regiment "I Volunteer Sir" Crest. 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,