Description
On a red rectangle arched at top and bottom, 2 inches (5.08cm) in width and 3 inches (7.62cm) in height overall and within a 1/8 inch (.32cm) yellow border, a yellow serpent (Bushmaster) coiled around a black machete with handle at upper right and blade point at lower left.

Symbolism
Scarlet and yellow are the traditional colors of the Field Artillery branch. The serpent and the machete are symbolic of the Canal Zone jungles and allude to service in that area.

Background
The shoulder sleeve insignia was approved on 23 April 1979. (TIOH Drawing Number A-1-640)