It is essential that all work which has to be carried out at night is explained to all noncommissioned officers in daylight. Any alterations noticed in the enemy's trenches or wire. What steps can be taken to annoy and harass the enemy. Action in case of attack. =11. WORK ON TRENCHES.=--Work on trenches should as far as possible be carried out during daylight. =12. GARRISONS OF TRENCHES.=--It is an invariable rule that during daylight the front-line trenches should be held as lightly as is compatible with safety. At night the garrison must be strengthened. The actual strength of garrisons will be governed by the tactical situation and by the number of support and communicating trenches at hand. With proper support and communicating trenches only sentries and snipers should be in the front-line trenches during daylight. To these will be added bombers if there are any old communicating trenches leading to the enemy's lines or if the proximity of the enemy demands their presence. =13. DISCIPLINE.=--(_a_) Sleeping in the front line trenches will not be allowed unless there is an absence of support trenches. (_b_) No dugouts will be constructed without the permission of the battalion commander. All dugouts must be made splinter proof. Work on them will not be commenced until sufficient material is at hand. If it can be avoided dugouts will not be constructed in the fire trenches. (_c_) No man will leave the trenches without permission from an officer. This order will be made known to all ranks. (_d_) Cooking should not take place in the front-line trenches. Whenever possible cooking will be done under company arrangements in order that the men may have their meals at regular hours. Washing and shaving should be carried out in support trenches when possible. (_e_) All parties moving within the trench area will be correctly marched by an officer or N. C. O. (_f_) Orderly room should be held daily in the trenches unless circumstances render this impossible. (_g_) Sentries are strictly forbidden to wear any covering over the ears. (_h_) An officer will always be present when an issue of rum takes place. (_i_) Equipment will never be taken off in the front-line trenches except in the case of working parties, when equipment may be removed by order of the company commanders. In support trenches equipment may be removed at the discretion of battalion commanders. (_j_) Sentries will remain standing at all times unless the height of the parapet renders this impossible. (_k_) All parties, with the exception of stretcher bearers, moving in the trench area will wear their arms and equipment. Orderlies may be excused wearing their equipment at the discretion of commanding officers. (_l_) The wearing of cotton bandoliers by working parties and orderlies is forbidden, nor are these bandoliers to be hung up in the trenches.