perilous salient must proceed at once, especially as Franco-British counter-attacks on the eastern side threatened to close it at the neck and cut the main line of German withdrawal. The retreat was executed with great skill and valor. While holding on the sides, the enemy forces were slowly pulled back from the apex, striving to win time to save artillery, although they must perforce lose or destroy great quantities of ammunition. Against the retreating foe fresh American divisions were hurled. On the

The

25th of July the Forty-second division relieved the Twenty-sixth, advancing toward the Vesle, with elements of the Twenty-eighth, until relieved on August 3d, by the Fourth Division. Farther east the Thirty-second had relieved the Third. Americans had to face withering fire from machinegun nests and fight hand to hand in the crumbled streets of the Champagne villages. Here were carried on some of the fiercest conflicts of American military history. Finally on the 6th of August the Germans reached the line of the Vesle, their retreat secured, although their losses had been terrific. But the pause was only momentary. Before they could bring up replacements, the British launched their great drive south of the Somme, the American Twenty-eighth, Thirty-second, and

Seventy-seventh divisions crossed the Vesle pushing the Germans before them, and there began what Ludendorff in his memoirs calls "the last phase."

Pershing had not lost sight of his original object, which was to assemble the American divisions into a separate army. After the victories of July, which wiped out the Marne salient, and those of August, which put the enemy definitely on the defensive, he felt that "the emergency which had justified the dispersion of our divisions had passed." Soon after the successful British attack, south of Amiens, he overcame the objections of Foch and concluded arrangements for the organization of this army, which was to operate in the Lorraine sector.1 It contained 600,000 men, fourteen American divisions and two French. On the 30th of August the sector was established and preparations made for the offensive, the first step in which was to be the wiping out of the St. Mihiel salient. This salient had existed since 1914, when the Germans, failing to storm the scarpe protecting Verdun on the east, had driven a wedge across the lower heights to the south. The elimination of this wedge would have

Allied opposition to an American army was so strong as to bring threats of an appeal to Wilson. The President steadfastly supported Pershing.

great moral effect; it would free the Paris-Nancy railway from artillery fire; and would assure Pershing an excellent base for attack against the MetzSedan railway system and the Briey iron basin. The German positions were naturally strong and had withstood violent French attacks in 1915. But there was only one effective line of retreat and the enemy, if he persisted in holding the apex of the salient, risked losing his entire defending force, should the sides be pressed in from the south and west.

On the 12th of September the attack was launched. It was originally planned for the 15th, but word was brought that the Germans were about to retire at a rate which would have left none of them in the salient by that date. Hence the attack was advanced by three days. The attempted withdrawal secured the retreat of the German main force, but they were unable to save their rear guard. After four hours of vigorous artillery preparation, with the largest assemblage of aviation ever engaged in a single operation (mainly British and French) and with American heavy guns throwing into confusion all rail movements behind the German lines, the advancing Americans immediately overwhelmed all of the enemy that attempted to hold their ground. By

the afternoon of the second day the salient was extinguished, 16,000 prisoners were taken, 443 guns and large stores of supplies captured. American casualties totaled less than 7000. The effects of the victory were incalculable. Apart from the material results, hope of which had motivated the attack, the moral influence of the battle of St. Mihiel in the making of American armies and the discouragement of the German High Command was of the first importance. "An American army was an accomplished fact," wrote Pershing, "and the enemy had felt its power. No form of propaganda could overcome the depressing effect on the morale of the enemy of this demonstration of our ability to organize a large American force and drive it successfully through his defense. It gave our troops implicit confidence in their superiority and raised their morale to the highest pitch. For the first time wire entanglements ceased to be regarded as impassable barriers and open-warfare training, which had been so urgently insisted upon, proved to be the correct doctrine."

The victory of St. Mihiel was merely the necessary prelude to greater things. During the first week of September the Allied command decided that the general offensive movement of their armies

should be pressed as rapidly as possible, converging upon the main line of German retreat through Mezières and Sedan. The British were to pursue the attack in the direction of Cambrai, the center of the French armies, west of Rheims, was to drive the enemy beyond the Aisne, while the Americans were to attack through the Argonne and on both sides of the Meuse, aiming for Sedan. Pershing was given his choice of the Champagne or Argonne sectors, and chose the latter, which was the more difficult, insisting that no other Allied troops possessed the offensive spirit which would be necessary for success. In the meantime a new American army was to be organized, to operate south of Verdun and against Metz, in the spring of 1919; in fact this was designed to be the chief American effort. As matters turned out this second American army was ready to make its offensive early in November, but in September none of the Allied chiefs expressed the opinion that the final victory could be achieved in 1918. Such were the difficulties of terrain in the Argonne advance that the French did not believe that the attack could be pushed much beyond Montfaucon, between the forest and the Meuse, before winter forced a cessation of active operations.