Section 21. Informal guard mounting for Infantry.
357. Informal guard mounting will be held on the parade ground of the organization from which the guard is detailed. If it is detailed from more than one organization, then at such place as the commanding officer may direct.
358. At assembly, the detail for guard falls in on the company parade ground. The first sergeant verifies the detail, inspects their dress and general appearance, and replaces any man unfit to march on guard. He then turns the detail over to the commander of the guard and retires.
359. At adjutant's call, the officer of the day takes his place 15 paces in front of the center of the guard and commands: 1. Officer (or officers) and noncommissioned officers, 2. Front and center, 3. MARCH; whereupon the officers and noncommissioned officers take their positions, are assigned and sent to their posts as prescribed in formal guard mounting. (Par. 352.)
The officer of the day will then inspect the guard with especial reference for its fitness for the duty for which it is detailed and will select, as prescribed in paragraphs 140 and 141, the necessary orderlies and color sentinels. The men found unfit for guard will be returned to quarters and will be replaced by others found to be suitable, if available in the company. If none are available in the company the fact will be reported to the adjutant immediately after guard mounting.
When the inspection shall have been completed the officer of the day resumes his position and directs the commander of the guard to march the guard to its post.