ShieldOr, a lion rampant Gules, armed and langued Azure, in chief a bar gemel rompu Sable engouled on dexter by the head of a boar couped at the ears and issuant from edge of the shield, on sinister by the same of a lion, both of the last and armed of the second.
CrestOn a wreath Or and Gules, a dragon’s head erased Argent, langued tri-parté and keeled Vert, enfiled with a castle turret with broken chain all Azure, the turret charged with a bezant.
MottoVETO (I Forbid).
ShieldThe outstanding feat of this Regiment’s service in France was cutting of the Railway Line between Montmedy and Sedan, November 6, 1918, from positions near Stenay. This is shown by the shield. The arms of Montmedy bear a black lion, those of Sedan a black boar, those of Stenay a gold lion rampant. The two broken bars represent the broken railroad line between the black lion (Montmedy) and the black boar (Sedan); the position of the Regiment at Stenay being shown by the rampant lion in red for Artillery. The shield is gold, the same as the shield of Lorraine where this engagement took place.
CrestIn heraldry, one of the symbols for a staunch defender is the dragon. The three pronged tongue represents the participation of the unit in World Wars I and II and the Korean War. It also alludes to the 3d Armored Division to which elements of the organization were assigned during World War II and the three German trains disabled by the 67th Armored Field Artillery Battalion at Braisne and Soissons during World War II. The castle turret and broken chain are used to symbolize Mons and the Falaise Pocket Campaign where the resistance of the enemy was completely broken and the cities were liberated. The bezant refers to the Philippine sun and denotes the action of the 57th Field Artillery Battalion, 7th Infantry Division in that area during World War II.
The coat of arms originally approved for the 57th Artillery Regiment CAC on 1 July 1921. It was amended to correct the blazon of the shield and add a motto on 7 February 1922. It was redesignated for the 57th Coast Artillery Regiment (Tractor Drawn) and amended to delete the crest on 3 February 1931. The insignia was redesignated for the 57th Field Artillery Battalion on 27 June 1952. It was redesignated for the 57th Artillery Regiment on 12 December 1958. It was amended to add the crest on 28 February 1966. It was amended to revise the symbolism on 17 October 1969. The insignia was redesignated for the 57th Air Defense Artillery Regiment effective 1 September 1971.