ShieldPer chevron Argent and Azure, in chief a palmetto and a long leaf pine of the second, in base a hornet Volant of the first.
CrestThat 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.
MottoVIRTUS, FIDES, HONOR (Courage, Faith, Honor).
ShieldThe colors blue and white are used for Infantry. The palmetto and pine tree represent South Carolina and North Carolina, the home area of the Regiment. The hornet is used in allusion to Charlotte, North Carolina, the unit's headquarters; Lord Cornwallis having referred to it during the Revolution as a hornet's nest."
CrestThe crest is that of the United States Army Reserve.
The coat of arms was originally approved for the 518th Infantry Regiment on 19 January 1956. It was redesignated for the 518th Regiment on 23 May 1960.