 Complete the following phrase:  By 26 March 1918 First Army had the 133rd and 166th Infantry Divisions and the 4th Cavalry Division which fought dismounted, even after exhausting its ammunition, joined by the 163rd Infantry Division on 29 March. Foch, newly appointed Allied generalissimo, ordered Debeney forward from Montdidier. He was in a difficult position, as many of his forces had yet to arrive. By 5 April Debeneys Army had been reinforced by four of the French divisions which had been sent to Italy the previous winter after 