Authorised 21 April 1959
A Gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a shield blazoned: Gules, two pallets Argent, overall a sheaf of four arrows behind a garb pierced by a fishhook fesswise all Or and charged with an Aztec sun symbol of the first. Attached below and to the sides of the shield a Red scroll turned Gold inscribed "AUDACIA" in Gold letters.
The two white stripes on the red field taken from the shield of the 4th Coast Artillery constitute the campaign ribbon of the War of 1812, depicting the age of the oldest units of the Regiment. The arrows from the crest of the 4th Coast Artillery represent participation in the Indian Wars and the numerical designation of the Regiment. The garb and fishhook refer to the Civil War, the battle of Gettysburg in the wheat fields, the fishhook being the shape of the Federal lines. The Aztec sun from the distinctive insignia of the 4th Field Artillery alludes to Mexican service. The motto translates to "By Daring Deeds."
The distinctive unit insignia was approved for the 4th Artillery Regiment on 21 April 1959. It was cancelled on 23 August 1971. Coat of Arms
