Although yellow has been the branch color for Armor since 1951, gold and green are employed on the Distinctive Unit Insignia of the Special Troops Battalion, 1st Armored Division to reflect the Battalion’s longtime association with the Division: the Battalion’s lineage dates back to the constitution of the Headquarters and Headquarters Detachment, 1st Armored Division Trains on 1 January 1942.
The embattled division of the shield portion of the insignia alludes to the unit’s participation in European campaigns during world War II. A tank wheel in the lower right of the insignia is a reference to the 1st Armored Division’s mission as a Tank Division, while it’s previous assignments as both an Adjutant General and Administration Company are reflected by the quill pen.
A lion passant in the upper left further commemorates service in Europe during the Second World War and is an emblem signifying courage and strength. A scroll teal blue alludes to the fact that Special Troops Battalions are Branch Immaterial. “Make It Matter” is the Battalion motto.
Often called a unit crest or a DUI, the Distinctive Unit Insignia of the Special Troops Battalion, 1st Armored Division was approved for wear on 9 November 2007.
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Distinctive Unit Insignias are 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.
Full guidance on wear of the DUI is found in DA Pamphlet 670-1,
Section 21-22, "Distinctive unit insignia."