(_m_) Ammunition must be kept in a thoroughly clean state. If the ammunition is not clean jambs will occur. Ammunition will be frequently inspected. (_n_) The "undercutting" of trenches is strictly forbidden. Drains will always be cut down the center of a trench and not at the sides. (_o_) When mining is in progress in any of the trenches occupied by the brigade the sandbags filled with earth from the mine will on no account be used in the front trenches or other points which are visible to the enemy. =14. RECONNAISSANCE AND PATROLLING.=--The best security against attack is active patrolling and constant observation of the enemy's lines, so that he can not undertake any new work without steps being taken to prevent its continuance. The enemy's wire will be constantly patrolled to insure that he has cut no gaps in it with a view to launching an attack. Patrols will also frequently visit our wire to insure that it is efficient. The front of our own fire parapet should be examined nightly. =15. INFORMATION.=--Every effort will be made by means of patrols, field glasses, etc., to ascertain information about the enemy, his trenches and wire. Any alterations in the enemy's lines must be reported, and if any of the enemy are seen a report will be sent in stating what dress they were wearing. The importance of forwarding all such information will be impressed on all ranks. =16. SNIPING.=--In every battalion a sniping section will be formed, consisting of 1 officer and 25 N. C. O.'s and men. The officer will carry out the duties of intelligence officer to his battalion. He will render a daily report to his commanding officer containing the following information: Number of casualties known to have been inflicted on the enemy. Number and location of snipers' posts. Any alterations in the enemy's trenches or wire. Number of telescope rifles in possession. Number and location of fixed rifles and rifle batteries in action. Any activity by the enemy. Battalion sniping officers will get into close touch with artillery observing officers within their sectors, and will give every assistance to them. =17. ARTILLERY SUPPORT.=--As a general rule, a forward observing officer of an 18-pounder battery will be quartered at or near battalion H. Q. Requests for retaliation should be made to this officer, and brigade H. Q. should be warned of the action taken. Fire from howitzers and heavy batteries can, except in the case of the S. O. S. signal, only be obtained through brigade H. Q. If retaliatory fire is required from howitzers, it must be stated on what point it is wished that the fire should be directed. Any trench mortaring by the enemy should be immediately reported to the officer commanding our trench mortars.