The thunder of the guns was so steady and so near one note that the Strangers could talk almost in an ordinary tone.

"It's our guns on the right that are in the most danger," said John.

"Correct," said Wharton. "The Uhlans are trying to cut them off, because those guns are doing great damage. Take the glasses again, and you can see their shells tearing through the German lines."

"I don't know that I want to see."

"Oh, look! This is war, and you'll have to get used to it!"

Then John looked and he saw that the German lines were not unbroken, as they had seemed to the naked eye. The shrapnel were tearing through them, making great holes, but the massive German columns never faltered for an instant. The gaps in their ranks were filled up, and they came on at an even pace, resolved to capture or destroy the French force. And they carried with them the memories of Gravelotte, Sedan and Metz. They would do as well as the men of old von Moltke had done.

John felt a thrill of admiration. The great military monarchy had built its machine well. It seemed at the moment resistless. It was made of steel rather than human flesh and blood, and it would roll over everything. Nothing had yet stopped that mighty concave curve of gray, although more and more French cannon were coming into action, and from right to left, and from left to right, they showered it with unceasing death.

But the German artillery, far more numerous and powerful than the French, were supporting their infantry. Shells were poured fast upon the hasty earthworks. Hundreds and hundreds of the defenders fell. The roar was now so stupendous that John could scarcely hear, and the air, before golden in the sunshine, turned a livid fiery hue.

All the Strangers were now formed in one of the trenches, and then wisely knelt low. John heard the shrieking, whining noise incessantly over his head, and it made his blood run cold. Instinctively he pressed hard against the side of his trench, but his curiosity was so keen that from time to time he raised his head above the edge to see how the battle fared directly in front. The gray Germans were much nearer, marching with the solid tread that seemed able to carry them across the world, while their gigantic artillery on the flanks and in the intervals flamed and roared without ceasing.

John knew that the loss among the French must be great, and he knew, too, that when the huge machine struck them they would be shattered. He wondered that the French leader did not order the retreat, but while he was wondering a trumpet suddenly sounded a shrill clear note audible amid the roar of the great guns, and he saw Captain Colton beckon to the Strangers.