Per fess Azure (Celestial) and Or, in chief olive branches (as depicted on the coat of arms of Reims, France) Or in base a turnstile Gules clove of the second with cross bars of the first.
That for the regiments and separate battalions of the Army Reserve: 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.
The distinctive wreath of the olive branches is taken from the arms of the City of Reims where the Battalion was stationed in World War II. The olive branches also allude to the subsequent signing of the Peace Treaty with the Third Reich at Reims. The turnstile symbolizes control of entrance and exit. It refers to the Battalion's war service in administering and operating a Prisoner of War stockade at Reims.
The crest is that of the U.S. Army Reserve.
The coat of arms was approved on 21 December 1964.