1. Duties—(a) One officer per company and one N.C.O. per platoon will always be on duty.
(b) By night the officer and N.C.O. on duty will frequently patrol the trench line, to see that the sentries are alert and to inquire whether they have any information to report about the enemy.
(c) The N.C.O. coming on duty will go around and post new sentries with the N.C.O. coming off duty.
(d) The length of each tour of duty will depend on the number of officers and N.C.O.'s available in the company. Normally, each tour should be, by night 2 hours, by day 4 hours, day commencing at morning "stand to" and night commencing at evening "stand to." In inclement weather it may be advisable to reduce the tour to 1 hour.
(e) N.C.O.'s after posting sentries will report "All correct" or otherwise to the officer on duty.
(f) The officer on duty will be responsible for sending in the reports required by battalion headquarters, unless there is anything unusual to report, when this duty will be performed by the company commander.
(g) Men will be warned for duty by the platoon N.C.O. on duty. This will be done at evening "stand to."
(h) On being detailed for duty, a man will be informed at which hours he will come on duty.
(i) When possible to do so, notice boards will be placed in each platoon's trench, on which will be pinned, daily, all orders regarding working parties, and a list of the men in the platoon, giving the time at which they will come on sentry and other duty.
(j) Except under special circumstances, such, for instance, as a sentry being killed or wounded, no sentry will be relieved by another man unless the relief is properly carried out in the presence of a N.C.O.