Azure, an arm embowed in armor and gauntleted Proper.
That for the regiments and separate battalions of the Army Reserve: On a wreath of the colors (Argent 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.
PERRUMPO (I Break Through).
The shield is blue for Infantry. The charge on the shield represents crushing power and force.
The crest is that of the United States Army Reserve.
The coat of arms was originally approved for the 424th Infantry Regiment, Organized Reserves on 20 June 1936. It was redesignated for the 485th Regiment on 7 December 1959.