2nd Air Defense Artillery Unit Crest "Fidus Ultra Finem" (Each) maj Medical Command Health Service OCP

Medical Command Health Service OCP Patch with Hook Fastener

307th Engineering Battalion Unit Crest  "I Maintain the Right" (Each)

Medical Veterinary "V" Officer Brite Pin-on

O6 Colonel Black Metal Pin-on Rank

Diver Scuba Brite Pin-on

2nd Air Defense Artillery Unit Crest "Fidus Ultra Finem" (Each) maj Medical Command Health Service OCP2nd Air Defense Artillery Unit Crest "Fidus Ultra Finem" (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,