Plutarch, Pompey
Bernadotte Perrin, Ed.

69. Pompey himself, with the right wing, intended to oppose Antony; in the center he stationed Scipio, his father-in-law, over against Lucius Calvinus; his left wing was commanded by Lucius Domitius, and was supported by the main body of the cavalry.¹ [2] For almost all the horsemen had crowded to this point, in order to overpower Caesar and cut to pieces the tenth legion; for this was generally said to fight better than any other, and in its ranks Caesar usually stood when he fought a battle. But Caesar, observing that the left wing of the enemy was enclosed by such a large body of horsemen, and alarmed at their brilliant array, sent for six cohorts from his reserves and stationed them behind the tenth legion, with orders to keep quiet and out of the enemy's sight; [3] but whenever the cavalry charged, they were to run out through the front ranks, and were not to hurl their javelins, as the best soldiers usually did in their eagerness to draw their swords, but to strike upwards with them and wound the faces and eyes of the enemy; for these blooming and handsome war-dancers (he said) would not stand their ground for fear of having their youthful beauty marred, nor would they face the steel when it was right at their eyes. Caesar, then, was thus engaged.

[4] But Pompey, who was surveying on horseback the battle array, when he saw that his antagonists were standing quietly in their ranks and awaiting the moment of attack, while the greater part of his own army was not at rest, but tossing about in waves of tumult, owing to its inexperience, was afraid that his array would be completely broken up at the beginning of the battle, and therefore ordered his front ranks to stand with their spears advanced, to remain fixed in their places, and so to receive the enemy's onset. [5] Now, Caesar finds fault with these tactics²; he says that Pompey thereby robbed the blows of his weapons of that impetus which a rapid charge would have given them; and as for that rushing counter-charge, which more than any thing else fills most soldiers with impetuous enthusiasm as they close with their enemies, and combines with their shouts and running to increase their courage Pompey deprived his men of this, and so rooted them to the spot where they stood, and chilled their spirits. And yet Caesar's forces numbered twenty-two thousand, while those of Pompey were a little more than twice as many.