The Distinctive Unit Insignia of the 300th Sustainment Brigade was approved for wear by the 300th Transportation Group on 24 September 1968. Its designed is centered around three roundels, a direct reference to the Group’s mission of directing motor vehicle transportation. Gold and buff are used throughout the insignia; these are Transportation Corps colors, with the gold also standing for achievement and excellent performance. At the top of the insignia, a scroll with the motto “Fidelity To Endeavor” passes over and through a fleur-de-lis, a symbol of France included here because it was the Group’s site of activation and inactivation during and after World War II.
Two crosses on roundels, countercharged in red and white, are taken from the arms of Lord Baltimore and which now appear on both the flag and seal of the Sate of Maryland; they allude to the two tours of duty the Group served in Baltimore. A black horse in the center is from the great seal of the state of Pennsylvania and stands for the unit’s home region and location of its headquarters at Butler at the time the insignia was approved. It’s also a reference to horsepower and the 300th Transportation Group.
As of Winter 2024, the 300th Sustainment Brigade remains allotted to the U.S. Army Reserve (it has been a Reserve unit since 1946) and is headquartered at Grand Prairie, Texas. A major subordinate command of the Army Reserve's 4th Sustainment Command (Expeditionary), the Brigade is made up of its HQ and HQ Company, the 363rd Quartermaster Battalion, and several smaller units (Companies, Detachments, and Teams) that almost all specialize in petroleum support.
♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦
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. Current regulations do not permit the DUI to be 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," respectivelyRelated Items300th Sustainment Brigade Patch (SSI)