He turned to a member of his staff. "Colonel Mercer," he said, "my compliments to General Rochelle, and repeat to him what you have just heard. You will order him to fall back slowly when the German offensive begins."

He turned to the others of his staff, who had manifested some surprise at this command. "I do this, gentlemen," he explained, "that the Germans may be drawn into a trap of our own setting. Not knowing that we have learned their plans, they will probably push the attack with vigor. When we begin to give way they will be confident of the success of their plan. In the meantime reënforcements shall be hurried forward, and, when the Germans have advanced to a point I shall select, we shall take the offensive with redoubled vigor. The enemy, caught unprepared, will be crushed before they can be sufficiently reënforced."

Exclamations of satisfaction escaped the group of staff officers, and Hal and Chester were greatly impressed by the prompt action of the French commander-in-chief.

"He allows no grass to grow under his feet," Hal whispered to Chester.

"I should say not," replied the latter.

General Joffre turned to Hal.

"It is your understanding, then," he said, "that the plot against the
President will not be tried until after the grand assault?"

"That is my understanding of the matter, sir," Hal replied.

"Good! In the meantime, then, we shall have time to take care of that." He turned to another of his officers. "Colonel Devore," he said, "you will see that these two lads are given suitable quarters."

The colonel saluted.