=198.= Answers to a sentinel's challenge intended to confuse or mislead him are prohibited, but the use of such an answer as "=Friends with the countersign=," is not to be understood as misleading, but as the usual answer made by officers, patrols, etc., when the purpose of their visit makes it desirable that their official capacity should not be announced. SPECIAL ORDERS FOR SENTINELS AT THE POST OF THE GUARD. =199.= Sentinels posted at the guard will be required to memorize the following: =Between reveille and retreat to turn out the guard for all persons designated by the commanding officer, for all colors or standards not cased, and in time of war for all armed parties approaching my post, except troops at drill and reliefs and detachments of the guard.= =At night, after challenging any person or party, to advance no one but call the corporal of the guard, repeating the answer to the challenge.= =200.= After receiving an answer to his challenge, the sentinel calls, "=Corporal of the guard (so-and-so)=," repeating the answer to the challenge. He does not in such cases repeat the number of his post. =201.= He remains in the position assumed in challenging until the corporal has recognized or advanced the person or party challenged, when he resumes walking his post, or, if the person or party be entitled thereto, he salutes and, as soon as the salute has been acknowledged, resumes walking his post. =202.= The sentinel at the post of the guard will be notified by direction of the commanding officer of the presence in camp or garrison of persons entitled to the compliment. (Par. 224.) =203.= The following examples illustrate the manner in which the sentinel at the post of the guard will turn out the guard upon the approach of persons or parties entitled to the compliment (Pars. 224, 227, and 228), "=Turn out the guard, commanding officer="; "=Turn out the guard, governor of a Territory="; "=Turn out the guard, national colors="; "=Turn out the guard, armed party="; etc. At the approach of the new guard at guard mounting the sentinel will call, "=Turn out the guard, armed party.=" =204.= Should the person named by the sentinel not desire the guard formed, he will salute, whereupon the sentinel will call "=Never mind the guard.=" =205.= After having called "=Turn out the guard=," the sentinel will never call "=Never mind the guard=," on the approach of an armed party. =206.= Though the guard be already formed he will not fail to call, "=Turn out the guard=," as required in his special orders, except that the guard will not be turned out for any person while his senior is at or coming to the post of the guard. =207.= The sentinels at the post of the guard will warn the commander of the approach of any armed body and of the presence in the vicinity of all suspicious or disorderly persons.