The Distinctive Unit Insignia is worn by all Soldiers (except General Officers) in units that have been authorized to be issued the device. It is worn centered on the shoulder loops of the Army Green Service Uniform (AGSU) and the blue Army Service Uniform (ASU, Enlisted only) with the base of the insignia toward the outside shoulder seam. DUIs are not worn on the Dress variations of either uniform, however.
Full guidance on wear of the DUI is found in DA Pamphlet 670-1,
Section 21-22, "Distinctive unit insignia."The 345th Military Intelligence Battalion Distinctive Unit Insignia (DUI), or unit crest, features a knight rendered in the branch color of silver gray slaying a dragon wreathed in black, symbolizing the organization’s ability to uncover actionable information and data despite the adversary’s attempts to hide it in darkness.
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Headquartered at Fort Eisenhower (formerly designated as Fort Gordon) in Georgia, the 345th Military Intelligence Battalion ("Dragon Slayers") is an Army Reserve unit that is subordinate to the 513th Military Intelligence Brigade when called to active military service. According to the Brigade's official Web site, the 345th Military Intelligence Battalion "conducts Mission Command and provides trained, equipped and ready Soldiers, teams and units to conduct regionally-focused all source and single-source intelligence operations, theater to tactical-level human intelligence, and counterintelligence operations in direct support of the 513th Military Intelligence Brigade (Theater)."
When not called to active service, the 345th Military Intelligence Battalion is a component of the U.S Army Reserve's Theater Support Command, Military Intelligence Readiness Command.