Authorised 19 January 1925
A Gold color metal and enamel device 1 3/16 inches (3.02 cm) in height overall consisting of a shield blazoned: Gules, two bars Gray fimbriated Or in chief three mullets of the second (Gray) fimbriated of the third (Or). Attached below the shield a Gold scroll inscribed "PARATUS ET FIDELIS" in Red letters.
The shield is the shield of George Washington modified by reversing the colors and using gray piped with gold, instead of silver, and giving a red shield for Artillery. The arms of the Father of our Country are not to be borne by any organization and the shield of the regiment is accordingly modified. The reason for this selection is that it is a tradition that one company of this regiment paraded as an escort to General Washington on the occasion of his inauguration as President on 30 April 1789, and in commemoration of that event, assumed the name of "Washington Greys" which it has borne to this date. It was then an Artillery organization and wore a gray uniform.
The distinctive unit insignia was originally approved for the 258th Field Artillery Regiment on 19 January 1925. It was redesignated for the 258th Field Artillery Battalion on 12 March 1954. It was redesignated for the 258th Artillery Regiment on 22 March 1962. The insignia was amended to add a motto on 18 October 1968. It was redesignated for the 258th Field Artillery Regiment on 31 July 1972. Coat of Arms