Description/Blazon A Silver shield shaped device 1 1/8 inches (2.86 cm) in diameter blazoned as follows: Per fess, the chief per pale Gules (Brick Red) and Buff, the base Azure (Dark Blue), a key ward upward and outward and a wrench in saltire Argent (Silver Gray), overall a dagger palewise point up of the last. Encircling the shield, a Black designation band displaying at top a Silver Gray Mosby hat, Black band and Red plume, inscribed at the bottom of the designation band "ALO VIS TUTIS VICTORIA" in Silver.

Symbolism The shield symbolizes defense. Buff is the color traditionally associated with the Sustainment units, also reflecting the unit's Quartermaster lineage. The following colors and images depict the organizational lineage combined to form the Fifty-fifth Sustainment Brigade: Brick red signifies Transportation, Crimson (red) for Ordnance, Dark Blue for the Adjutant General Corps, the wrench suggests maintenance support and the key denotes the unit's control of military supplies by the Quartermaster Corps. The dagger with point up represents military support, signifying "Soldiers First." The Mosby hat with ostrich plume was worm by COL John Singleton Mosby, commander of the Civil War Mosby's Rangers and the namesake of the Reserve Center where the 55th Sustainment Brigade is located. The motto translates to "Sustain The Force, Secure The Victory."

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