But it was all one to the boys, as all they cared about was the prospect of some pleasurable excitement. And more excitement was brewing for them than they anticipated, for this was by far the most serious riot that had occurred since they had entered German territory, and was one not easily to be suppressed. The regiment was not long in getting ready, and was soon swinging out of camp, headed toward the rebellious city. As the soldiers approached it, they could hear the sound of rifle firing, mingled with the sharper sound of machine gun fire. "Something doing, all right," said Bart, as they swung rapidly along. "Sounds as though some one were getting trouble, and plenty of it, and I'm willing to bet the Heinies are getting the worst end of it." "You can bet they are," agreed Billy. "And just wait till this bunch of bad men gets after them. It begins to seem like old times again." "Right you are," said Tom. "And whatever's going to happen, it will be pretty soon, because we're getting close." By this time they were indeed on the outskirts of the town, and before long were swinging down one of the main streets, the noise of rifle firing and shouting growing steadily louder as they progressed. At first few people were to be seen, although here and there an anxious face peered out of an upper window. But as they penetrated further into the heart of the city, they encountered hurrying and shouting knots of men, who, however, hastily changed their direction when they caught sight of the businesslike appearance of the Americans. Suddenly Billy caught sight of a face at an upper window that seemed familiar. "There's the fellow that tried to strike the lame man the day you took his cane away from him, Frank!" he exclaimed. Frank looked in the direction that Billy indicated just as the man was hastily withdrawing behind a curtain. "Couldn't see much of him, but it did look something like him," he remarked. "But I shouldn't be surprised to find him mixed up in this trouble. He's the kind that would be in the thick of it." Just then there was a flash from the window and a bullet whizzed by the Army Boys and flattened against the wall on the other side of the street. "I'll bet that was aimed at you, Frank!" exclaimed Bart. "That fellow's a bad shot but he has a good memory." The shot was quickly followed by others from windows and roofs, but fortunately, the snipers were in too much of a hurry to take effective aim, and their bullets did little damage at first.