A gold color metal and enamel device 1 3/16 inches (3.02cm) in height overall consisting of a scarlet enamel background bearing a white enamel saltire throughout surmounted by a black enamel fighting gamecock depicted in a typical attack position, in base a gold five-pointed star, all enclosed within a gold horseshoe charged with six green enamel five-pointed stars, all below a semi-circular scarlet enamel scroll inscribed, "Duty Above All" in gold letters.
Scarlet and gold (yellow) are colors used by Artillery units. The six stars represent the unit's World War II service in Tunisia, Sicily, Naples-Foggia, Rome-Arno, North Apennines, and Po Valley. The colors red, white and green are the National Colors of Italy, while the colors green and red with the single gold star allude to the award of the French Croix-de-Guerre with Silver Gilt Star, World War II, for action at Cassino. The gamecock refers to General Thomas Sumter, "The Gamecock of the Revolution," for whom the city and county of Sumter, South Carolina, were named. The horseshoe relates to the organization's historical background as a horse drawn Field Artillery unit and the saltire symbolizes the organization's firepower.
The distinctive unit insignia was originally approved for the 151st Artillery Group on 12 Mar 1971. It was redesignated for the 151st Field Artillery Group on 15 May 1972. On 8 Jun 1979 the insignia was redesignated for the 151st Field Artillery Brigade.