Also known as a unit crest or DUI, a 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.
♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦
The 11th Infantry Regiment Distinctive Unit Insignia (DUI), or unit crest, was approved on 12 October 1920, with both its design and symbolism based entirely on the Regimental coat of arms.
It employs a shield-shaped design with the top quarter divided from the lower three quarters by an embattlement that recalls the Regiment’s siege of Chattanooga in 1863. The upper quarter has a white background with a red cross of the ancient Lords of Dun to celebrate the crossing of the Meuse river at Dun during World War One.
A blue background is used in the lower three quarters to denote the organization’s status as an Infantry unit. The gold castle below the embattlement represents service in the Spanish American War, while the horizonal arrow is Satanta’s arrow and reflects the Regiment’s actions in the Comanches campaign of the Indian Wars; Satanta was a famed Kiowa chieftain, and in reality his “arrow” was a spear with a feathered handle and tip.
The crossed kampilan and bolo below the arrow are emblems recalling engagements against the Moros in Mindanao and the Filipinos of the Visayas during the Philippine Insurrection.