Shield
Gules, on a saltire Or a winged spur of the first.
Crest
On a wreath of the colors Or and Gules a crescent of the first, a fountain within a chevron raguly Sable overall, and issuant therefrom a fleur-de-lis Gold the outer leaves in base conjoined to the crescent.
Motto
PERFORMANCE ABOVE ALL.
Shield
The shield is red for Artillery. The saltire is taken from the State flag of Alabama, the birthplace of the Regiment. The winged spur signifies that the unit was mounted.
Crest
The two Distinguishing Unit Citations awarded the organization during World War II are symbolized by the crescent for French Tunisia and the raguly chevron for the bridgehead at Ramagen. The irregular upper edge of the chevron alludes to the attempted destruction of the Ludendorf Bridge by the retreating enemy. The fountain is used to represent the organization's action along the Meuse River; and the fleur-de-lis symbolizes the unit's action in the Ardennes.
The coat of arms was originally approved for the 84th Field Artillery Regiment on 3 December 1936. It was redesignated for the 84th Field Artillery Battalion on 18 November 1940. It was redesignated for the 84th Artillery Regiment on 28 October 1958. It was amended to add a crest on 1 July 1965. The insignia was redesignated effective 1 September 1971, for the 84th Field Artillery Regiment.