Also known as a unit crest or DUI, a Distinctive Unit Insignia (DUI) is worn by all Soldiers (except General Officers) in units that have been
authorized to be issued the device. The 194th Armored Brigade Distinctive Unit Insignia was approved for wear on 18 March 1966. Blue, yellow, and red overlapping lightning flashes stand for Infantry, Armor/Cavalry/ and Artillery, respectively; the mace superimposed at their juncture indicates the overwhelming smashing power of Artillery, and also represents the unit’s World War II service in the Central Europe campaign. Lightning flashes also reinforce the unit motto.
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.