No. 1 is the method adopted in daylight attack, the advance not being covered by gas or smoke clouds. No. 2 is method adopted in night attack and when weather conditions or topographical features of ground covered in the advance allow it. Attacking squads are allotted positions in lines of infantry immediately opposite their first objectives, and on reaching these positions should immediately commence bombing and clearing the trenches towards their final objectives. In the case of No. 1 the infantry clears the main trench, but special grenade parties may be told off to assist the infantry in this work, especially when strong points occur in the enemy position. It is most important that all infantry taking part in an attack should be previously supplied with grenades and this must be considered the first source of supply. Positions designated as infantry grenade dumping positions should be chosen and known to the infantry at which they dump their grenades in their advance on the enemy positions. These positions should be close to the position to be captured and held. In order to hold positions captured from the enemy it is imperative that grenade storming parties hold their final objectives at all costs, and until the positions to be permanently held have been consolidated. TRENCH STORMING PARTIES Trench storming parties should kill or drive back the hostile occupants of a trench as quickly as possible, clear as much of the enemy trench as has been ordered, and then hold the portion cleared with as small loss as possible to themselves. It must be remembered that in trench clearing, and especially in deep and narrow trenches, only the head of the attacking party can directly kill, and seldom more than one man can throw at a time. Therefore it is essential that a constant supply of grenades reaches the thrower and that the places of casualties are automatically filled by reinforcements. Men must be trained until they can do this either by day or at night time. =Advance.= Movement is rapid until contact with the enemy is obtained. Once contact is established it must be maintained and pressed home. A retreating enemy must be given no time to re-establish a defensive attitude, corners must be worked carefully and bays and straight pieces of trench rushed. The bayonet men will complete the work of the grenades and see that the carrier and thrower will meet with no opposition on their way to new throwing position. The effect of a grenade bursting in a confined space like a trench is tremendous, and though it may not kill it will stun or shock the hostile occupants, and if the bayonet men follow up rapidly they will meet with very little resistance.