ShieldVairy Argent and Gules (Red squirrel fur) three oak trees one and two Vert, on a canton of the first the shoulder sleeve insignia of the 80th Division Proper.
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.
MottoOLD VIRGINIA NEVER TIRES.
ShieldThe red squirrel background is for the training in the British Area; Red Squirrel being the Regiment's code name. The three green trees are for the three times into the Argonne. The 80th Division badge is in the canton. The motto was the one carried throughout World War I by the Regiment on its wagon covers.
CrestThe crest is that of the United States Army Reserve.
The coat of arms was originally approved for the 318th Infantry Regiment on 29 May 1923. It was redesignated for the 318th Regiment on 18 August 1960.