Per fess Or and Azure, issuant from partition line two piles reversed and concaved, in honor point a fleur-de-lis, all of the last, in base a sun in splendor of the first.
That for the regiments and separate battalions of the Army reserves: On a wreath of the colors (Or and Azure), the Lexington Minute Man Proper. The statue of the Minute Man, Captain John Parker (H.H. Kitson, sculptor), stands on the Common in Lexington, Massachusetts.
BOUTEZ EN AVANT (Push Forward).
The shield is blue for Infantry with gold, the tincture of the shield of the arms of the ancient province of Lorraine, where the organization served during World War I. The fleur-de-lis denotes that the service was in France. The arrangement of the piles suggests the "Middlewest" Division, by which designation it was known during World War I. The sun is taken from the State flag of South Dakota and is symbolic of the "Sunshine State."
The coat of arms was originally approved for the 356th Regiment Infantry on 7 May 1928. It was redesignated for the 356th Regiment on 30 Jan 1962.