Shield
Per fess enhanced Gules and Or, in nombril point a stand of grapeshot Sable between in fess two rattlesnakes nowed, each above and behind a prickly pear cactus Vert, on the first two pallets Argent.
Crest
On a wreath of the colors Or and Gules, a tower Or behind a dexter arm embowed and habited grasping a rammer staff fesswise all Gules.
Motto
PRIMUS INTER PARES (First Among Equals).
Shield
The coats of arms of the former 1st Coast Artillery and the 1st Field Artillery have been consolidated. Scarlet and yellow are the colors used for Artillery. The white stripes taken from the shield of the1st Coast Artillery commemorates participation of both regiments in the War of 1812. The stand of grapeshot from the shield of the 1st Field Artillery alludes to the mission of the Artillery. It is used to commemorate the remark attributed to General Zachary Taylor at the Battle of Buena Vista, A little more grape, Captain Bragg. Braggs battery is credited with having saved the day at that battle. The rattlesnakes, taken from the shield of the 1st Coast Artillery, represent service in the Mexican War.
Crest
The tower, used in the crests of both of the former units, and the hand grasping the rammer staff, taken from the crest of the 1st Antiaircraft Artillery, refer to the Civil War. Both regiments participated in the battle of Fort Sumter.
The coat of arms was approved on 21 April 1959. It was cancelled on 23 August 1971.