Motto:"VOLENS ET POTENS" (Willing and Able)
Description: A Gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a shield blazoned: Gules, on a palmetto tree eradicated Or a Lorraine cross Azure. Attached below and to the sides of the shield a Gold scroll inscribed "VOLENS ET POTENS" in Red letters.
Symbolism: The shield is scarlet for Artillery; the palmetto tree, representing South Carolina, alludes to the district to which the unit was allocated. The Lorraine cross represents service in the Lorraine sector, France.
Background: The distinctive unit insignia was originally approved for the 320th Field Artillery Regiment, Organized Reserves on 27 July 1925. It was redesignated for the 320th Field Artillery Battalion on 23 April 1942. It was redesignated for the 320th Glider Field Artillery Battalion on 22 October 1942. The insignia was redesignated for the 320th Airborne Field Artillery Battalion on 15 October 1951. It was redesignated for the 320th Artillery Regiment on 24 September 1958. Effective 1 September 1971, the insignia was redesignated for the 320th Field Artillery Regiment. The insignia was amended to update the description on 3 February 2005.