The road descended steadily along the valley of a pretty river, closed in on either side by densely-wooded hills. Here and there among the trees, they caught glimpses of white villas; below them, along the river, there was an occasional cluster of houses; but they saw few people. Either the inhabitants of this land had fled before the enemy, or were keeping carefully indoors out of his way. Once the fugitives had an alarm, for a hand-car, manned by a squad of German soldiers, came spinning past; but fortunately Stewart heard it singing along the rails in time to pull his companion into a clump of underbrush. A little later, along the highway by the river, they saw a patrol of Uhlans riding, and then they came to Fléron and took to the hills to pass around it. Here, too, clouds of black smoke hung heavy above certain of the houses, which, for some reason, had been made the marks of German reprisals; and once, above the trees to their right, they saw a column of smoke drifting upward, marking the destruction of some isolated dwelling. The sun was sinking toward the west by the time they again reached the railroad, and they were both desperately weary; but neither had any thought of rest. The shadows deepened rapidly among the hills, but the darkness was welcome, for it meant added safety. By the time they reached Bois de Breux, night had come in earnest, so they made only a short détour, and were soon back on the railroad again, with scarcely five miles to go. For an hour longer they plodded on through the darkness, snatching a few minutes' rest once or twice; too weary to talk, or to look to right or left. Then, as they turned a bend in the road, they drew back in alarm; for just ahead of them, close beside the track, a bright fire was burning, lighting up the black entrance of a tunnel, before which stood a sentry leaning on his rifle. Five or six other soldiers, wearing flat fatigue caps, were lolling about the fire, smoking and talking in low tones. Stewart surveyed them curiously. They were big, good-humored-looking fellows, fathers of families doubtless--honest men with kindly hearts. It seemed absurd to suppose that such men as these would loot villages and burn houses and outrage women; it seemed absurd that anyone should fear them or hide from them. Stewart, with a feeling that all this threat of war was a chimera, had an impulse to go forward boldly and join them beside the fire. He was sure they would welcome him, make a place for him---- "_Wer da?_" called, sharply, a voice behind him, and he spun around to find himself facing a leveled rifle, behind which he could see dimly the face of a man wearing a spiked helmet--a patrol, no doubt, who had seen them as they stood carelessly outlined against the fire, and who had crept upon them unheard. "We are friends," Stewart answered, hastily.