Or, on a pale embattled Azure pierced by a saber Gules a cannon reversed of the field and thereon a saber and a bayonet saltirewise and an arrow palewise all points down of the third.
On a wreath Or and Azure a cratered mount Vert bearing a saber bendwise Or and in the crater a kris reversed Gules.
PARATUS ET FIDELIS (Prepared and Loyal).
The shield is yellow for Cavalry. The attack on the intrenchments at Selma is symbolized by the embattled blue pale and red bayonet. The capture of Hood's Artillery is shown by the reversed cannon. The rout of the enemy's Cavalry at Murfreesboro by the reversed saber and the successful Indian campaigns by the reversed arrow.
The Bud Dajo campaign is indicated by the conventionalized volcano of the crest and the defeat of the Moros by the reversed kris in the crater. The crest contains the regiment's triumphant saber at the charge.
The coat of arms was originally approved for the 4th Cavalry Regiment on 9 February 1922. It was amended to correct the blazon of the shield on 27 April 1926. The insignia was redesignated for the 4th Reconnaissance Battalion on 11 December 1950. It was redesignated for the 4th Armored Cavalry Reconnaissance Battalion on 30 June 1955. The insignia was rescinded on 24 May 1956. It was reinstated and approved for the 4th Cavalry Regiment on 30 August 1957.