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.
Enlisted personnel wear the insignia 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.
More 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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The 1024th Medical Battalion Distinctive Unit Insignia was approved on 1 September 1995. It incorporates the official branch colors of the Army Medical Corps via a maroon scroll and cross potent and a white (silver) shield and text for the unit motto, “HUSKER EVAC,” which also serves as a reference to its location in Nebraska (“Cornhusker State”).
A green serpent entwined around the cross potent is adapted from the staff of Aesculapius (or Asclepius) and is an emblem of life-giving power, while the cross itself has long been a symbol of medical assistance. The terminus of each cross in an embattlement suggests safety as provided by castle walls, and in fact they represent the historical forts of the territories that eventually became Nebraska.