John sprang into the automobile, and sank down upon the cushions. He had a vast sense of ease and luxury. He had not known until then, the extent of his mental and physical overstrain, but de Rougemont, who was also in the machine, observed it and gave him a drink from a flask, which revived him greatly.

Then the automobile turned into the road and moved forward at a slow gait, puffing gently like a monster trying to hold in his breath. From the wood and the fields came the tread of many thousand men, marching to the night attack. Behind their own automobile rose the hum of motors, bearing troops also, and dragging cannon.

John felt that he was going back in state, riding by the side of a general and at the head of an army. He found both pride and exultation in it. Sleep was far from his eyes. How could one think of sleep at such a moment? But youth, the restorer, was bringing fresh strength to his tired muscles and he was never more alert.

At one point they stopped while the general examined the dusky horizon through his glasses, and a company of men with faces not French marched past them. They were John's own Strangers, and despite the presence of General Vaugirard both Wharton and Carstairs reached up and shook his hand as they went by.

"Welcome home," said Wharton.

"See you again in the morning," said Carstairs.

"God bless you both," said John with some emotion.

Captain Daniel Colton nodded to him. They were not effusive, these men of the Strangers, but their feelings were strong. When the automobile in its turn passed them again and resumed its place at the head of the column, they seemed to take no notice.

No more shells passed over John's head. He knew that General Vaugirard had sent back word for the batteries to cease firing in that direction, but both to south and north of them the sullen thunder went on. The night remained light, adorned rather than obscured by the little white clouds floating against the sky. The only sound that John could hear was the great hum and murmur of a moving army, a sound in which the puffing of automobiles had introduced a new element. He wondered why they had not roused up German skirmishers, but perhaps those vigilant gentlemen, had grown weary at last.

They reached the first brook, and, as they were crossing it, the rifle fire expected so long began to crackle in front. Then the French trumpets shrilled, and the whole force marched rapidly, rifles and field guns opening in full volume. But the French had the advantage of surprise. Their infantry advanced at the double quick, a powerful force of cavalry on their right flank galloped to the charge, and Bougainville's Paris regiment and the Strangers swept over the field.