"I must get back to camp," he explained, "to tell the Seven about this new plan. We shall find a way to circumvent it, I think; we always do. And I'll promise you that the yearlings who 'dump' me will have a very lively evening of it. Good-by."

And Mark left.

Now it must be explained that the plebes had lately been given guns.

The instruction in marching, halting, etc., which they had gotten in barracks was supplemented by all sorts of evolutions, and by drill in the manual of arms.

This latter of course necessitated guns; and great was the joy of the ambitious and warlike plebe on the momentous day that "guns" were given out. The guns were regulation army muskets, heavy beyond imagination. So the plebe soon wished he hadn't wished for them. Besides drilling with them, which he found harder work than digging trenches, he had to clean them daily; and cleaning a gun under the watchful eye of a merciless yearling proved to be a matter of weeping and gnashing of teeth. It had to be done; for he had a number on his gun, so that he couldn't steal his neighbor's well-cleaned one; and if his own wasn't clean he got into trouble at the very next inspection.

Besides the three drills a day, there were other duties galore. There was policing twice a day, "policing" meaning the sweeping clean of the acre or two of ground within the limits of Camp McPherson. Then also there was "guard-mounting."

Guard-mounting is the daily ceremony of placing the sentries about the camp; the cadets who go on duty then remain until the following morning. This ceremony has already been described within the pages of this series; it will have much to do with our present story.

The plebes of course were not put on guard until they had been fairly well trained in other duties. They had to know how to march, halt, salute, present arms, etc. Also they had to be accoutered in their dress uniforms, which were issued about this time.

Mark Mallory had been notified to report for guard duty that morning, greatly to the joy of his friends, the Seven, who had rubbed and polished him till he shone. He had "fallen in" at the summons and received a long and appalling list of instructions from his corporal. Then he had been put on Post No. 3 for his first tour of duty.

The sentries about the camp march for two hours, and then have four hours off duty, thus having eight hours "on" in the twenty. During this time they speak to no one, except to challenge parties who cross their beats. This last duty is where the yearlings have all the fun with the new plebe.