At sieges and elsewhere, where occasion draws us near to the enemy, we willingly suffer our men to brave, rate, and affront him with all sorts of injurious language; and not without some colour of reason: for it is of no little consequence to take from them all hopes of mercy and composition, by representing to them that there is no fair quarter to be expected from an enemy they have incensed to that degree, nor other remedy remaining but in victory. And yet Vitellius found himself deceived in this way of proceeding; for having to do with Otho, weaker in the valour of his soldiers, long unaccustomed to war and effeminated with the delights of the city, he so nettled them at last with injurious language, reproaching them with cowardice and regret for the mistresses and entertainments they had left behind at Rome, that by this means he inspired them with such resolution as no exhortation had had the power to have done, and himself made them fall upon him, with whom their own captains before could by no means prevail. And, indeed, when they are injuries that touch to the quick, it may very well fall out that he who went but unwillingly to work in the behalf of his prince will fall to't with another sort of mettle when the quarrel is his own.
Considering of how great importance is the preservation of the general of an army, and that the universal aim of an enemy is levelled directly at the head, upon which all the others depend, the course seems to admit of no dispute, which we know has been taken by so many great captains, of changing their habit and disguising their persons upon the point of going to engage. Nevertheless, the inconvenience a man by so doing runs into is not less than that he thinks to avoid; for the captain, by this means being concealed from the knowledge of his own men, the courage they should derive from his presence and example happens by degrees to cool and to decay; and not seeing the wonted marks and ensigns of their leader, they presently conclude him either dead, or that, despairing of the business, he is gone to shift for himself. And experience shows us that both these ways have been successful and otherwise. What befell Pyrrhus in the battle he fought against the Consul Levinus in Italy will serve us to both purposes; for though by shrouding his person under the armour of Megacles and making him wear his own, he undoubtedly preserved his own life, yet, by that very means, he was withal very near running into the other mischief of losing the battle. Alexander, Caesar, and Lucullus loved to make themselves known in a battle by rich accoutrements and armour of a particular lustre and colour: Agis, Agesilaus, and that great Gilippus, on the contrary, used to fight obscurely armed, and without any imperial attendance or distinction.
Amongst other oversights Pompey is charged withal at the battle of Pharsalia, he is condemned for making his army stand still to receive the enemy's charge; by "reason that" (I shall here steal Plutarch's own words, which are better than mine) "he by so doing deprived himself of the violent impression the motion of running adds to the first shock of arms, and hindered that clashing of the combatants against one another which is wont to give them greater impetuosity and fury; especially when they come to rush in with their utmost vigour, their courages increasing by the shouts and the career; 'tis to render the soldiers' ardour, as a man may say, more reserved and cold." This is what he says. But if Caesar had come by the worse, why might it not as well have been urged by another, that, on the contrary, the strongest and most steady posture of fighting is that wherein a man stands planted firm without motion; and that they who are steady upon the march, closing up, and reserving their force within themselves for the push of the business, have a great advantage against those who are disordered, and who have already spent half their breath in running on precipitately to the charge? Besides that an army is a body made up of so many individual members, it is impossible for it to move in this fury with so exact a motion as not to break the order of battle, and that the best of them are not engaged before their fellows can come on to help them. In that unnatural battle betwixt the two Persian brothers, the Lacedaemonian Clearchus, who commanded the Greeks of Cyrus' party, led them on softly and without precipitation to the charge; but, coming within fifty paces, hurried them on full speed, hoping in so short a career both to keep their order and to husband their breath, and at the same time to give the advantage of impetuosity and impression both to their persons and their missile arms.