1. The preparatory formation of infantry is line, or lines, of battalions in lines of company columns at varying intervals and distances.
2. After leaving the position of assembly, formations will be regulated by commanders in conformity with the rules laid down in S. 133.
3. The firing line will, except in the preparatory stages of the attack, be in skirmishing order, though in the final stages of the attack, preparatory to the assault, the men may be as close to one another as will admit of them using their rifles effectively. In open ground the bodies in rear will also be in skirmishing order; but during a protracted fight, when the firing-line is making slow progress, officers commanding bodies in rear of the firing-line should utilise all cover, closing them sufficiently to enable them to execute any manœuvre that may be ordered without confusion or delay.
4. In wooded or close country, or when there is no chance of coming under unexpected fire, the bodies in rear of the firing-line may move in lines of company columns.
5. These bodies should move in as compact a formation as the nature of the ground allows; but the importance of a rapid extension to the front should always be held in view. Battalions or companies echeloned to the rear in order to protect a flank should adopt a formation which will enable them to change direction in order to meet cavalry or counter-attack with the utmost rapidity.
145. Frontage.
1. The frontage occupied in attacking, having regard to the fact that the position should be enveloped, must as a rule be greater than that of the defence. It is unnecessary, however, that the attacking force should be in equal strength along the whole front. Those portions of the position against which the main attack is not directed should be engaged by a holding attack, and the flank which is not to be seriously attacked may be observed or merely threatened by a feint. Troops engaged in holding attacks and feints should try to deceive the enemy as to their real strength. They may occupy, therefore, a comparatively wider front than the troops detailed for the decisive attack.
2. Troops engaged in a decisive attack must follow a different procedure. The object is to establish the strongest possible firing-line at decisive range from the position, S. 153 (1).
Against a weak enemy, however, or an enemy holding an exposed position, or when the advance is covered by a very superior artillery fire, the frontage allotted to a battalion may be greater than under normal conditions. But it is always to be borne in mind that troops extended at very wide intervals are peculiarly susceptible to counter-attack, and that their attack is certain to lose in vigour and resolution.
3. In the case of a company, or small force, attacking independently the men need not be so close as in the case of larger forces.