311. Troop stable guards will be under the immediate control of their respective troop commanders; they will be posted in each cavalry stable or near the picket line, and will consist of not less than one noncommissioned officer and three privates.
Stable guards are for the protection of the horses, stables, forage, equipments, and public property generally. They will, in addition, enforce the special regulations in regard to stables, horses, and parks.
312. Sentinels of stable guards will be posted at the stables or at the picket lines when the horses are kept outside. The troop stable guard may be used as a herd guard during the day time or when grazing is practicable.
313. The troop stable guard, when authorized by the post commander, will be mounted under the supervision of the troop commander. It will be armed, at the discretion of the troop commander, with either rifle or pistol.
314. The tour continues for 24 hours, or until the guard is relieved by a new guard.
315. The employment of stable guards for police and fatigue duties at the stables is forbidden; but this will not prohibit them from being required to assist in feeding grain before reveille.
316. The troop stable guard will attend stables with the rest of the troop and groom their own horses, the sentinels being taken off post for the purpose.
317. Neither the noncommissioned officer nor the members of the stable guard will absent themselves from the immediate vicinity of the stables except in case of urgent necessity, and then for no longer time than is absolutely necessary. No member of the guard will leave for any purpose without the authority of the noncommissioned officer of the guard.
318. The noncommissioned officer and one member of the stable guard will go for meals at the proper hour; upon their return the other members of the guard will be directed to go by the noncommissioned officer.
319. When the horses are herded each troop will furnish its own herd guard. (Par. 14.)