A gold color metal and enamel device 1 7/32 inches (3.10cm) in height overall consisting of a shield blazoned: Azure, in chief a chevron reversed rompu point enhanced Argent, in base three bendlets sinister of the last. Above the shield a wreath of the colors a boulder Proper. Attached below the shield a gold motto scroll inscribed "THE ROCK OF THE MARNE" in blue letters.
The regiment was organized in 1917 and took part in the French Campaigns of 1918 in the 3d Division; its most remarkable feat being at Chateau Thierry on the Marne, July 15, where it broke the point of the German attack. This division is shown by the broken chevron, the rock and motto. The divisional insignia forms the base of the shield.
The distinctive unit insignia was approved on 25 Nov 1922.