Carstairs and Wharton, after a short combat in words, fell sound asleep, but John lingered a little. He saw the fires burning smokily, and French soldiers passing before the blaze. From where he lay he could also see far out upon the plain that lay before them. But everything there was veiled in heavy mists and low clouds. Although an army of perhaps a hundred thousand men was only a short distance away the night disclosed no trace of it.
The rain began to fall soon, coming down as John had foreseen in a strong, steady pour. The sound on the heavy canvas was so soothing that his nerves relaxed and he slept. He was awakened at an unearthly hour by the strong hand of Captain Colton pulling at his shoulder.
As soon as John realized that it was his commanding officer he sprang to his feet and saluted, although his eyes were yet heavy with sleep. It was still raining and the water poured from a heavy cape coat that Captain Colton wore over his uniform. Carstairs and Wharton were already on their feet.
"You three are chosen for a mission," said Captain Colton, "and I'll tell it to you as briefly as I can. We've received news tonight that another German force is coming from the northeast. If it gets upon our flank we're lost, but there is a French army, and perhaps an English force with it or near it to the west. If they can be brought up in time they will protect our flank and save us—and also themselves. But we must have trusty messengers. The flying machines can do little in the storm. So we fall back on the ancient agencies. Can you ride, Mr. Scott?"
"Yes sir."
"Then you three are to go at once. Other messengers will ride forth, but I should feel very proud, if it were the Strangers who brought help."
The little appeal was not lost on the three. He rapidly gave them instructions about the point, at which the second French force was supposed to be, and told them to ride for it as hard as they could, giving to them sealed despatches also. Their own army would be falling back meanwhile.
"Both Carstairs and Wharton know this region and the roads," he said to John, "and you keep with them. Are you ready?"
"Yes sir," answered the three together.
They stepped out into the rain, but forgetful of it. An orderly was holding three horses. In an instant, they were in the saddle and away. They passed through the lines and came out upon one of the splendid French roads, the three abreast. The rain was beating in their faces, but the orderly had tied cloaks to their saddles, and now they wrapped them about their bodies.