130.  When challenged by a sentinel while posting his relief, the corporal commands:  1. Relief, 2.  HALT; to the sentinel’s challenge he answers “Relief,” and at the order of the sentinel he advances alone to give the countersign, or to be recognized.  When the sentinel says, “Advance relief,” the corporal commands:  1. Forward, 2.  MARCH.

If to be relieved, the sentinel is then relieved as prescribed.

131.  Between retreat and reveille, the corporal of the guard will challenge all suspicious looking persons or parties he may observe, first halting his patrol or relief, if either be with him.  He will advance them in the same manner that sentinels on post advance like parties (pars. 191 to 197), but if the route of a patrol is on a continuous chain of sentinels, he should not challenge persons coming near him unless he has reason to believe that they have eluded the vigilance of sentinels.

132.  Between retreat and reveille, whenever so ordered by an officer entitled to inspect the guard, the corporal will call:  “Turn out the guard,” announcing the title of the officer, and then, if not otherwise ordered, he will salute and return to his post.

133.  As a general rule he will advance parties approaching the guard at night in the same manner that sentinels on post advance like parties.  Thus, the sentinel at the guardhouse challenges and repeats the answer to the corporal, as prescribed hereafter (par. 200); the corporal, advancing at port arms, says:  “Advance (so and so) with the countersign,” or “to be recognized,” if there be no countersign used; the countersign being correctly given, or the party being duly recognized, the corporal says:  “Advance (so and so),” repeating the answer to the challenge of the sentinel.

134.  When officers of different rank approach the guardhouse from different directions at the same time, the senior will be advanced first, and will not be made to wait for his junior.

135.  Out of ranks and under arms, the corporal salutes with the rifle salute.  He will salute all officers, whether by day or night.

136.  The corporal will examine parties halted and detained by sentinels, and, if he have reason to believe the parties have no authority to cross sentinel’s posts, will conduct them to the commander of the guard.

137.  The corporal of the guard will arrest all suspicious looking characters prowling about the post or camp, all persons of a disorderly character disturbing the peace, and all persons taken in the act of committing crime against the Government on a military reservation or post.  All persons arrested by corporals of the guard or by sentinels will at once be conducted to the commander of the guard by the corporal.

SECTION 7.  MUSICIANS OF THE GUARD.

138.  The musicians of the guard will sound calls as prescribed by the commanding officer.