A gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of two gold rays issuing from base diagonally to the left and right saltirewise terminating in a convex arc across the top, each bearing a green mace saltirewise, spiked heads at the top, and between the rays at the top upon a blue arched interstice a white crescent with horns to upper left, and curved around green interstices at the sides and base of the rays a gold scroll inscribed "READY TO RESPOND" in green letters.
Green and yellow (gold) are colors used for the Military Police Corps. The white crescent on the blue was suggested by the flag of South Carolina to denote the unit's location and assignment to the South Carolina Army National Guard. The crescent also signifies growing brightness and together with the gold rays refers to the Battalion's investigation and crime prevention mission. The rays which simulate beams of light, also allude to the Battalion's origin in the Coast Artillery (Harbor Defense). The maces, a historic weapon used by warriors and guards as a hand arm, represent the protective services provided by the organization.
The distinctive unit insignia was approved on 2 March 1971.