A Gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a shield blazoned: Azure, a saltire Argent, in chief an oak tree eradicated of the last. Attached above the shield from a wreath Argent and Azure, a lion's head erased Or collared four fusils Gules. Attached below and to the sides of the shield a Gold scroll inscribed "FIDELIS ET FORTIS" in Black letters.
The shield is blue for the Infantry; the white saltire cross commemorates the service of the old regiment in the Civil War and the silver oak tree the service in World War I (Argonne Forest). The motto is the motto of the old 1st New Jersey Infantry and translates to "Faithful and Brave."
The distinctive unit insignia was originally approved for the 113th Infantry Regiment on 26 March 1925. It was amended to include the motto on 22 July 1925. It was redesignated for the 113th Armored Infantry Battalion on 5 July 1952. The insignia was redesignated for the 113th Infantry Regiment and amended to include the State crest on 5 June 1961.