At the time the United States declared war on Germany, Hal and Chester were captains in the service of King George of England, serving at the time under Field Marshal Haig. With other Americans in the allied army, however, they were selected to return to the United States, where for some months they lent invaluable service to Uncle Sam in drilling raw recruits at the army training camps. Such excellent reputations had they won, however, that when the first American expeditionary force sailed for France, Hal and Chester found themselves among them. Since their return, they had taken active parts in the American advance. They had been with the Marines at Chateau-Thierry and Belleau Wood; they had been with the heroic Thirty-second division which had won undying fame in the Argonne forest, where the American forces had been all but annihilated under the German fire. Now they had been resting for several days. The turning point in the great war had come and gone. The full power of American might was making itself felt on the western battle front, where the Yankee troops time and again had proved themselves the masters of the best the German emperor had to offer. The tide had turned at Chateau-Thierry in the early summer, and from that time on the Americans, under the leadership of "Black Jack" Pershing, had pressed their advantage at every opportunity. To the unprejudiced observer it was apparent that the Germans were already beaten. True, they might fight on for days, weeks or months, but their offensive power had been broken by the million and more Americans who had been hurled against them. There was nothing at the moment to indicate that the German emperor, his advisors, or the German people, were willing to cry for peace, but it was plain that the ultimate outcome was only a question of time. From time to time came rumors of internal disorders in Germany. These, however, could not be substantiated, and for that reason it was impossible to tell that Germany was on the eve of a revolution. Gradually the allies and the American forces had pushed their battle lines toward the east. Much of France and of Belgium, for almost four years occupied by the Germans, had been reclaimed. Everywhere, where there was fighting, the advantage rested with the allies. No longer did the Germans dash to the attack with the impetuosity that characterized their attacks in the early dawn of the war. Their morale had been broken. Even the crack Prussian Guards, the flower of the German army, had been decisively beaten by the Americans at Chateau-Thierry. Hurled into the battle at the last moment in an attempt to stem the advance of American soldiers and marines, they had proved unequal to the task. The Yankees had proved their masters at every turn.