(c) All the above schemes, divisional, brigade, battalion, company, and platoon, will be handed over at each relief to the relieving formation, unit, etc. They will be made out in consultation by the formations, units, etc., habitually occupying the defenses with which they deal.
(d) The object of defense schemes is to insure that every officer, N. C. O., and man knows what to do in case of attack, and does it instinctively and promptly. The minor schemes must therefore be detailed and exact, and each officer and man must have his duties thoroughly explained to him by his immediate superior. All defense schemes will be rehearsed once in each relief.
(e) At each relief of a battalion, company, or platoon the commander of it will report to his immediate commander that he has taken over and understands the defense schemes for the position he is occupying.
(f) All officers' servants, bombers, orderlies, etc., will have duties allotted to them in case of attack.
7. MACHINE GUNS.—(a) The concealment of machine-gun emplacements is important; consequently it is only in case of attack that machine guns will be fired from their defense emplacements.
(b) Unless emplacements are well concealed guns will not be mounted, except between evening and morning "stand to."
(c) The guns and their crews will be tactically under the orders of the battalion commander in whose subsector they are located, but no alteration will be made by him in their disposition or arcs of fire; he will, however, bring before his brigade commander any suggestion for improvement in the machine-gun dispositions for defense.
(d) Two men per gun will always be on duty with the gun.
(e) At dusk, but while there is still sufficient light, each gun will be laid on the center line of the zone alloted to it.
(f) Range cards will be prepared and kept with each gun.