The aim of the War Department, as carried out by General Pershing, Commander in Chief of the American Expeditionary Forces, was to make the American Army in France an integral force, able to take the offensive and to carry on its own operations, and with that end in view he shaped its training and planned for its use at the front after its arrival in France. While he offered and furnished whatever troops Marshal Foch desired for use at any part of the battle line, General Pershing refused to distribute all his forces, insisted upon building them up as they became ready for the front into a distinctive American Army--at the signing of the armistice the First, Second and Third American Armies had been thus created--and by the time the American forces had begun to make themselves felt at the front he had substituted American methods of training, finding them better adapted to his men than the European, and in his last battle, the decisive action in the Meuse-Argonne region, his staff work was all American. The plan of training carried out, except in the later months when the demand for troops at the front was immediate and urgent, allowed each division after its arrival in France one month for instruction in small units, a second month of experience by battalions in the more quiet trench sectors and a third month of training as complete divisions. When the great German offensive began in Picardy in March, 1918, General Pershing had four divisions ready for the front and offered to Marshal Foch whatever America had in men or materials that he could use. None of the Allied commanders believed that men so recently from civilian life could be used effectively in battle and it was only General Pershing’s knowledge of the character of his men, his insistent faith that they would make good under any trial of their mettle and his willingness to pledge his honor for their behavior under fire that induced Marshal Foch to accept his offer.