Sure enough, Billy had hardly enunciated the words when another big military car appeared, dashing up to headquarters at high speed and stopping with a jerk. Great was the curiosity as to whom the last comer might be, and greater still the surprise when the soldiers recognized the well known features of the commander-in- chief of all the Allied armies, Marshal Foch himself! To the boys the reason for the great marshal's presence here was obscure, but, as usual, his movements were dictated by very sufficient reasons. He was preparing the future movements of the Allied armies in the event of Germany's refusal to sign the peace treaty. Where a civilian might have said: "Oh, of course they'll sign the treaty; what else can they do?" the man who had led the Allies to victory had no intention of leaving the smallest thing to chance. At present he was making an inspection of all the Allied armies at the Rhine crossings, together with their equipment, transportation facilities, artillery, and all the other branches on which a successful advance would so much depend. After a short conversation in the open, Marshal Foch and General Pershing entered the regimental headquarters, accompanied by the higher officers of both staffs. Meanwhile the boys had again been given the command "at rest," which was a welcome change from the long period of standing rigidly at attention. After a short interval, the two generalissimos reappeared. This time both entered the car that had brought Marshal Foch to the scene, and the big automobile rolled off in a cloud of dust. "Guess inspection is over now, and pretty near time, too," whispered Tom. His surmise turned out to be correct, for shortly afterward the regiment was dismissed and returned to the barracks, where shortly afterward the midday mess was served. But the visit of the two commanders marked the beginning of an era of extreme bustle and activity. Numbers of tanks, both small and large, began to make their appearance in the camp, likewise heavily loaded ammunition wagons and lorries, big field pieces, and all the other equipment that modern warfare has made a necessity. Of course all this was of the greatest interest to the four Army Boys, as to their comrades, and many were the speculations as to its meaning. "Looks as though the war had started again," said Bart. "There hasn't been as much as this stirring since the armistice was signed." "Either that, or we're getting all ready to start again, which seems more likely to me. But we'll probably find out soon enough, one way or another," remarked Billy. It was in fact the preparation of a new drive that they saw going on about them. And this time, should it start, the drive would not stop its easterly course until it reached Berlin. The Allied leaders were determined to make this advance so irresistible and conclusive that there could be no discussion afterward as to whether the German Army really was beaten.