Azure (Cobalt Blue), on a pile wavy Or between four goutti d'eau two and two a smoke ring Sable.
That for the regiments and separate battalions of the Army Reserve: From a wreath 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.
Cobalt blue and golden yellow (gold) are the colors used for the Chemical Corps. The smoke ring denotes the smoke generator mission of the Battalion. Black connotes concealment, and the ring shape suggests the great mobility of the unit in providing screening activities. The unit's location in Johnstown, Pennsylvania, is indicated by the area between the sloped sides, for the valley of the Allegheny Mountains, and the wavy edges together with the white heraldic drops indicating water refer to the floods associated with its history. Additionally, the four drops, eight waves on the slopes, and five smoke lobes (485) allude to the unit's designation.
The crest is that of the U.S. Army Reserve.
The coat of arms was approved on 12 May 1997.