Argent, a giant cactus Vert. On a canton embattled (for the 22d Infantry) Azure, a cross patée of the field (for the 11th Infantry) charged with an acorn Gules (for the 18th Infantry).
On a wreath of the colors (Argent and Vert) a walnut tree Proper.
This regiment was organized at Douglas, Arizona, in July 1916 from the 11th, 18th and 22d regiments of Infantry. These organizations are shown on a canton. In the Civil War the predecessor of the 11th Infantry was in the 2d Division, V Corps, the badge of which was a white Maltese cross; the 18th Infantry was in the 1st Division, 14th Army Corps, with a red acorn as the badge. The 22d Infantry was originally the 2d Battalion, 13th Infantry and as such distinguished itself at the Siege of Vicksburg, receiving the name "First at Vicksburg." This is shown by the embattled partition line of the canton. The cactus represents the original border service of the 35th Infantry.
The crest commemorates the baptism of fire of the regiment at Nogales, the Spanish for walnut trees.
The coat of arms was approved on 9 Apr 1920.