The 100th Missile Defense Brigade Distinctive Unit Insignia (DUI), or unit crest, was approved on 5 January 2005. Inside a hexagon divided diagonally into black and blue fields is an eagle clutching a lightning bolt above a green-capped mountain range; the transition of colors from green to blue to black represents the range of missile defense from earth (green) to sky (blue) to space (black), with the upward dividing line mimicking the ground-based interception weapons used by the Brigade. An eagle on the attack, armed with a powerful lightning bolt, is a graphic representation of the unit motto “CONTEGAMUS ET CASSAMUS,” or “Guard And Destroy”—the eagle is vigilant and ready to destroy threats to the nation. In addition to representing terra firma, the mountain range recalls the mountains seen on the State Seal of the Colorado, site of the Brigade’s original and current headquarters.
In addition to its Headquarters and Headquarters Battery, the Brigade includes five Missile Defense Elements stationed at Schriever Air Force Base, Colorado. The Brigade’s major subordinate element, the 49th Missile Defense Battalion, is located at Fort Greely, Alaska.
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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 (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" and 21–3(d) and (e),
"Beret" and
"Garrison Cap," respectively.
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