The procedure of the troops engaged in the decisive attack is governed by the following principles:—

1. Success largely depends on the close and intelligent co-operation of all parts of the force engaged, and the attacks delivered by different portions of the force should as a rule be simultaneous, for this purpose communication between them must be carefully maintained.

2. The main object of the attack is to attain a superiority of fire by establishing the strongest possible firing line, on good fire positions within decisive range of each objective, preparatory, if necessary, to capturing it by an assault. Whether the objective be the defenders main position, or an advanced position, the attack will be conducted on the same principle.

3. To reach decisive range with as little loss as possible, the advance, which will be covered by the fire of the artillery and reserves, should be rapid and energetic, and be made in successive lines of skirmishers widely extended and preceded by scouts; the firing line should avoid opening fire until either the defenders, or their position, can be clearly distinguished, if the results are to justify the delay and expenditure of ammunition entailed; when once this point is reached, the first line of skirmishers should be reinforced in order that the fire may be effective, S. 134 (2).

The further advance will now be a matter of the greatest difficulty, for the reinforced firing line will offer a considerable target to the defenders, and that at decisive range; it will only be possible to approach closer to the enemy when the movement of one portion of the firing line is supported by the fire of the remainder, but whether the advance to the next fire positions is to be made by alternate rushes of complete portions of the firing line, or by pushing forward a few extended men as from a fresh starting point, covered by the fire of the rest, and gradually reinforcing them, thus building up a fresh firing line, must depend on varying circumstances such as the nature of the ground and the volume of the enemy’s fire, and the choice of method must therefore be left to subordinate commanders, who alone will possess any control at this stage of the fight.

4. On open ground and at effective ranges long lines of men rising simultaneously, and making even short rushes forward, will generally suffer heavier losses than small bodies suddenly moving forward, as the latter surprise the enemy, and thus for a time avoid his aimed fire. The rush should be continued only as long as the surprise lasts. The closer the ranges, the shorter should be the rushes.

5. It is by no means necessary that the firing line should be everywhere of the same density. It is from covered positions that fire is most effective; and it is at these points, therefore, that force should be concentrated.

6. The firing line, which will be continually strengthened by successive reinforcements, will thus fight its way forward until the immediate objective is enveloped, or partially enveloped, at the closest range by a strong firing line, which, in combination with the artillery will bring as powerful a fire as possible to bear against the defence, in order to rapidly establish a superiority of fire preparatory to the assault.

7. Positions affording cover in advance of the enemy’s main position, which may be seized or occupied, should, if necessary, be put in a state of defence; here the troops will re-form and a further advance made by repeating the process of attack against the next objective, as from a fresh starting point.

137. The Assault.