The 1st and 2nd Provisional Brigades of the United States Tank Corps would eventually go on to provide the original cadre for what would become the 66th Armored Regiment in World War II. In September 1918 both brigades - which were attached to the 1st Infantry Division in France - participated in the battle of St. Mihiel and the Meuse-Argonne Offensive, operating French-built Renault FT tanks. Five days before the Armistice with Germany, the brigades were renamed respectively the 304th and 305th Brigades, Tank Corps on 6 November 1918.