[339] This induces the British _Infantry Training_ to prescribe that in a rencontre a concentration for attack should invariably be ordered. [340] Military history furnishes a multitude of examples of the fact that a force can persevere in spite of the most galling fire (St. Privat. Gorni Dubniac). A reverse does not occur, as a rule, until the advent of unforeseen circumstances. The Brigade of Highlanders held out for hours at Magersfontain, and an insignificant change of front on the right flank subsequently caused the whole line to retire. See _Kriegsgeschichtliche Einzelschriften_, 32, p. 74. When infantry is compelled to go into action, the necessity of occupying important supporting points and of gaining ground for the concentration for action, requires a broad front to be covered. (Par. 357 German I. D. R.). The artillery, which will arrive soon thereafter, will then bring relief to the infantry in critical situations. In every rencontre there comes a moment when the fight is at a standstill. At this moment an attentive observer may notice that, although it is impossible to push the attack home without further reinforcements, the space in which the concentration for action is to take place, is secured against a hostile attack, or that the enemy has been deprived of the initiative and has been thrown on the defensive. This is the moment in which the commander regains the initiative and in which, by means of an _attack order_, he can dispose of the troops of the main body as he sees fit. _The “rencontre” differs from the “deliberately planned attack,” in that, in the latter, the concentration for action can proceed smoothly as desired by the commander, while in a rencontre the opponent, for the time being, dictates the course of action. Therefore the commander should make efforts to free himself from this restraint, i.e., he should endeavor to launch his troops in a manner not influenced by the dispositions of the enemy._ The degree of control which a commander retains over the course of the combat depends upon the promptness with which he gains a general idea of the situation. For this, if for no other reason, he should be as near the head of the column as possible while on the march. The troops sent first into action, supported by the artillery, must put every available man into the fight, in order to repulse attacks made by the enemy and to enable the commander to launch the main body as an entity. In any case, the battalions of the main body should not be successively thrown into the fight as soon as they arrive, for the purpose of overcoming a temporary crisis, or for relieving the advance guard from a dilemma. The machine gun batteries, whose employment was particularly important during the preparatory stage of the fight, should be withdrawn as early as possible so as to be available as a reserve in the hands of the commander.