"The Colonel desires to see you, sir," said an Orderly, stepping up and saluting.

Guy jumped up, put on his weapons, and turned to take leave of his roommates, all of whom came forward to shake him by the hand, but he did not see a sign of wavering on the part of any of them. Their faces were white, but there was a determined look about their features which showed that they fully comprehended the danger of their situation and were ready to take the consequences.

"Good morning, Mr. Preston," said the Colonel, when he entered the quarters and found him alone there with Colonel Fetterman. "I have put you in command of the signal tower to-day."

"So I have understood, sir," said Guy. "But don't you think——"

"I have thought the matter all over and I have resolved upon my course," replied the commanding officer, turning almost fiercely upon Guy. "I want to see if you understand the signals."

"Yes, sir; I know them by heart," returned Guy, who saw that it would be of no use to ask the Colonel to change that order.

"Very well. You are to keep a close watch on the party that goes out to protect the wagons, and you will be careful to make the same signals to them that I shall make to you."

"Very good, sir. I understand."

"Then my business with you is done. I see that the squad is getting ready," said the Colonel, as the blast of a bugle echoed through the Fort. "You will find three men out there, with rations, and you will stand watch while you are there. That's all."