(1) Piquets must take up their night positions when it is getting dusk, the strengthening of the piquet and construction of obstacles being done in advance, secretly if possible, and towards evening the working party should withdraw and leave the intended night position empty till it is time to move into it, further work being completed by twilight. (2) The provision of obstacles is more necessary than entrenchment, as securing the piquet from being rushed while completing the latter. (3) Men must rest on their alarm posts, and bayonets may have to be kept fixed by all, if there is a possibility of a sudden attack (I.T., 151 (7)), to ensure instant readiness. (4) All piquets must stand to arms one hour before light and remain ready for action till the patrols have found that there is no sign of an immediate attack. When relief takes place in the morning, night outposts will not return to camp till the patrols report all clear. After this, let the non-commissioned officer in command withdraw the piquet from its day position and march it to the night position. On arrival ask the non-commissioned officers in turn where they would place the piquet exactly and where they would put their obstacles. Obstacles for a night piquet should be under close fire, i.e., ten or twenty paces, but, in addition, booby traps and alarms may be placed further in front. Barbed wire is the best of all obstacles. The actual defensive measures to be taken do not differ from those taken for the defence of any position not on outpost. The position of the piquet and obstacles being decided on, let the non-commissioned officers mark on the ground the actual work they would undertake, having regard to the time available, which you should tell them, and, on the same lines as for the day piquet, let them as commanders in turn divide the men into reliefs of sentries and patrols, tell them off to their alarm posts, and order them to occupy them once as if on alarm.