139.  Should the guard be turned out for national or regimental colors or standards, uncased, the field music of the guard will, when the guard present arms, sound, “To the color” or “To the standard”; or, if for any person entitled thereto, the march, flourishes, or ruffles, prescribed in paragraphs 375, 376, and 377, A. R.

SECTION 8.  ORDERLIES AND COLOR SENTINELS.

140.  When so directed by the commanding officer, the officer who inspects the guard at guard mounting will select from the members of the new guard an orderly for the commanding officer and such number of other orderlies and color sentinels as may be required.

141.  For these positions the soldiers will be chosen who are most correct in the performance of duty and in military bearing, neatest in person and clothing, and whose arms and accouterments are in the best condition.  Clothing, arms, and equipments must conform to regulations.  If there is any doubt as to the relative qualifications of two or more soldiers, the inspecting officer will cause them to fall out at the guardhouse and to form in line in single rank.  He will then, by testing them in drill regulations, select the most proficient.  The commander of the guard will be notified of the selection.

142.  When directed by the commander of the guard to fall out and report an orderly will give his name, company, and regiment to the sergeant of the guard, and, leaving his rifle in the arm rack in his company quarters, will proceed at once to the officer to whom he is assigned, reporting:  “Sir, Private ——­, Company ——­, reports all orderly.”

143.  If the orderly selected be a cavalryman, he will leave his rifle in the arm rack of his troop quarters, and report with his belt on, but without side arms unless specially otherwise ordered.

144.  Orderlies, while on duty as such, are subject only to the orders of the commanding officer and of the officers to whom they are ordered to report.

145.  When an orderly is ordered to carry a message, he will be careful to deliver it exactly as it was given to him.

146.  His tour of duty ends when he is relieved by the orderly selected from the guard relieving his own.

147.  Orderlies are members of the guard, and their name, company, and regiment are entered on the guard report and lists of the guard.

148.  If a color line is established, sufficient sentinels are placed on the color line to guard the colors and stacks.

149.  Color sentinels are posted only so long as the stacks are formed.  The commander of the guard will divide the time equally among them.

150.  When stacks are broken, the color sentinels may be permitted to return to their respective companies.  They are required to report in person to the commander of the guard at reveille and retreat.  They will fall in with the guard, under arms, at guard mounting.