=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. =151.= Color sentinels are not placed on the regular reliefs, nor are their posts numbered. In calling for the corporal of the guard, they call: "=Corporal of the guard. Color line.=" =152.= Officers or enlisted men passing the uncased colors will render the prescribed salute. If the colors are on the stacks, the salute will be made on crossing the color line or on passing the colors. =153.= A sentinel placed over the colors will not permit them to be moved except in the presence of an armed escort. Unless otherwise ordered by the commanding officer, he will allow no one to touch them but the color bearer. He will not permit any soldier to take arms from the stacks or to touch them except by order of an officer or noncommissioned officer of the guard. If any person passing the colors or crossing the color line fails to salute the colors, the sentinel will caution him to do so, and if the caution be not heeded he will call the corporal of the guard and report the facts. =Section 9. Privates of the Guard.= =154.= Privates are assigned to reliefs by the commander of the guard, and to posts usually by the corporal of their relief. They will not change from one relief or post to another during the same tour of guard duty unless by proper authority. =Section 10. Orders for Sentinels.= =155.= Orders for sentinels are of two classes: General orders and special orders. General orders apply to all sentinels. Special orders relate to particular posts and duties. =156.= Sentinels will be required to memorize the following: My general orders are: =1. To take charge of this post and all Government property in view.= =2. To walk my post in a military manner keeping always on the alert and observing everything that takes place within sight or hearing.= =3. To report all violations of orders I am instructed to enforce.= =4. To repeat all calls from posts more distant from the guardhouse than my own.=