General Mack capitulated after the battle of Ulm, although in the centre of his own country.
The Prussians, in spite of their depôts and reserves, were obliged, after the battle of Jena, and the French after that of Waterloo, to lay down their arms.
Hence, we may conclude that the misfortune that results from the loss of a battle, does not consist so much in the destruction of men and of materiel as in the discouragement which follows this disaster. The courage and confidence of the victors augment in proportion as those of the vanquished diminish; and whatever may be the resources of an army, it will be found that a retreat will degenerate rapidly into a rout unless the general-in-chief shall succeed, by combining boldness with skill, and perseverance with firmness, in restoring the morale of his army.
MAXIM XXXII.
The duty of an advanced guard does not consist in advancing or retiring, but in manœuvring. An advanced guard should be composed of light cavalry, supported by a reserve of heavy cavalry, and by battalions of infantry, supported also by artillery. An advanced guard should consist of picked troops, and the general officers, officers and men, should be selected for their respective capabilities and knowledge. A corps deficient in instruction is only an embarrassment to an advanced guard.
NOTE.
It was the opinion of Frederick that an advanced guard should be composed of detachments of troops of all arms. The commander should possess skill in the choice of ground, and he should take care to be instantly informed, by means of numerous patrols, of everything passing in the enemy’s camp.
In war, it is not the business of an advanced guard to fight, but to observe the enemy, in order to cover the movements of the army. When in pursuit, the advanced guard should charge with vigor, and cut off the baggage and insulated corps of the retiring enemy. For this purpose, it should be reinforced with all the disposable light cavalry of the army.