U.S. ARMY 1ST BRIGADE COMBAT TEAM, 1ST INFANTRY DIVISION UNIT CREST (DUI)

Approved on 8 August 1928, the design of the Distinctive Unit Insignia (also called a DUI or unit crest) of 1st Brigade Combat Team, 1st Infantry Division was inspired by the coat of arms of the two Infantry regiments that comprised the unit when it was organized as the 1st Infantry Brigade in June 1917.

The fleur-de-lis shape of the insignia is taken from the coat of arms of the 18th Infantry Regiment, which had used the fleur-de-lis from the coat of arms of Soissons, site of a decisive engagement during the French counterattack against the Germans during the Second Battle of the Marne in 1918. The pattern on the fleur-de-lis known as fur vair is similarly taken from the coat of arms of Fleville by the 18th Infantry Regiment for its arms; both regiments fought in the area In October 1918.

Officially nicknamed “Devil Brigade” (not to be confused with the 1st Special Service Force, called the “Devil’s Brigade”), the 1st Brigade Combat Team, 1st Infantry Division received its current designation on 16 September 2009. At the same time, the Headquarters Company, 1st Brigade, 1st Infantry Division was split from the HQ, beginning its own separate lineage from that point on.

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 (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.

For Enlisted personnel, the insignia is centered on a shoulder loop by placing it an equal distance from the outside shoulder seam to the outside edge of the shoulder-loop button. Officers (except Generals) wearing grade insignia on the shoulder loops center the DUI by placing it an equal distance between the inside edge of the grade insignia and the outside edge of the button.

Full guidance on wear of the DUI is found in DA Pamphlet 670-1, Section 21-22, "Distinctive unit insignia" and 21–3(d) and (e), "Beret" and "Garrison Cap," respectively.