ShieldPer fess wavy Argent and Gules a bend embattled counter-embattled counterchanged, in chief a caltrap Sable.
CrestThat for the regiments and separate battalions of the Army Reserve: On a wreath of the colors Argent and Gules, 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.
MottoWE FIGHT TO BUILD.
ShieldWhite and red are the colors of the Engineers. The embattled bend and wavy partition line symbolize the repair and construction of roads and bridges to facilitate the movement of troops in combat. The caltrap (a defensive implement of medieval times which was usually strewn upon the ground in front of horse troops to impede their advance) represents the important mission of minelaying and minesweeping.
CrestThe crest is that of the United States Army Reserve.
The coat of arms was approved on 4 December 1964.