ShieldPer fess Azure and Gules a fess nowy per fess wavy Argent and of the first between in chief three mullets of the third and in base a powder horn of the like, mouth to dexter, ferruled Sable.
CrestThat for the regiments and separate battalions of the District of Columbia Army National Guard: On a wreath of the colors Argent and Azure, the dome of the United States Capitol Proper in front of a rising sun Or.
MottoDIEU DEFEND LE DROIT (God Defends The Right).
ShieldBlue is the color used for Infantry. The horizontal band, simulating both an architectural dome shape and a water symbol, alludes to the U.S. Capitol and the Potomac River and combined with the stars representing the three branches of Government, symbolizes the District of Columbia, home area of the 380th Infantry. The powder horn, a symbol for readiness and vigilance, is also indicative of the rich colonial heritage of the organization.
CrestThe crest is that of the District of Columbia Army National Guard.
The coat of arms was approved on 7 November 1973.