Description
On a red shield arched at the top and base 3 inches (7.62 cm) in height and 2 inches (5.08 cm) in width overall a blue lozenge surmounted diagonally from upper left to lower right by a white Bowie knife, hilt down, all within a blue 1/8 inch (.32 cm) border.

Symbolism
The Bowie knife alludes to "The Bowie State" a nickname used for Arkansas, home station of the Brigade. The Bowie knife, a weapon used for close fighting and implying hand-to-hand combat, is also indicative of the aggressive spirit of the Infantry. The lozenge or diamond refers to the unique aspect of the state as having the only diamond field in North America.

Background
The shoulder sleeve insignia was approved on 24 September 1968. (TIOH Drawing Number A-1-506)