Quickening their step, the royal army now hastily descended the steep sides of the sierra; and notwithstanding every effort of their officers, they moved in so little order, each man picking his way as he could, that the straggling column presented many a vulnerable point to the enemy; and the descent would not have been accomplished without considerable loss, had Pizarro's cannon been planted on any of the favorable positions which the ground afforded. But that commander, far from attempting to check the president's approach, remained doggedly in the strong position he had occupied, with the full confidence that his adversaries would not hesitate to assail it, strong as it was, in the same manner as they had done at Huarina.21
Yet he did not omit to detach a corps of arquebusiers to secure a neighboring eminence or spur of the Cordilleras, which in the hands of the enemy might cause some annoyance to his own camp, while it commanded still more effectually the ground soon to be occupied by the assailants. But his manoeuvre was noticed by Hinojosa; and he defeated it by sending a stronger detachment of the royal musketeers, who repulsed the rebels, and, after a short skirmish, got possession of the heights. Gasca's general profited by this success to plant a small battery of cannon on the eminence, from which, although the distance was too great for him to do much execution, he threw some shot into the hostile camp. One ball, indeed, struck down two men, one of them Pizarro's page, killing a horse, at the same time, which he held by the bridle; and the chief instantly ordered the tents to be struck, considering that they afforded too obvious a mark for the artillery.22
Meanwhile, the president's forces had descended into the valley, and as they came on the plain were formed into line by their officers. The ground occupied by the army was somewhat lower than that of their enemy, whose shot, as discharged, from time to time, from his batteries, passed over their heads. Information was now brought by a deserter, one of Centeno's old followers, that Pizarro was getting ready for a night attack. The president, in consequence, commanded his whole force to be drawn up in battle array, prepared, at any instant, to repulse the assault. But if such were meditated by the insurgent chief, he abandoned it,—and, as it is said, from a distrust of the fidelity of some of the troops, who, under cover of the darkness, he feared, would go over to the opposite side. If this be true, he must have felt the full force of Carbajal's admonition, when too late to profit by it. The unfortunate commander was in the situation of some bold, high-mettled cavalier, rushing to battle on a war-horse whose tottering joints threaten to give way under him at every step, and leave his rider to the mercy of his enemies!
The president's troops stood to their arms the greater part of the night, although the air from the mountains was so keen, that it was with difficulty they could hold their lances in their hands.23 But before the rising sun had kindled into a glow the highest peaks of the sierra, both camps were in motion, and busily engaged in preparations for the combat. The royal army was formed into two battalions of infantry, one to attack the enemy in front, and the other, if possible, to operate on his flank. These battalions were protected by squadrons of horse on the wings and in the rear, while reserves both of horse and arquebusiers were stationed to act as occasion might require. The dispositions were made in so masterly a manner, as to draw forth a hearty eulogium from old Carbajal, who exclaimed, "Surely the Devil or Valdivia must be among them!" an undeniable compliment to the latter, since the speaker was ignorant of that commander's presence in the camp.24
Gasca, leaving the conduct of the battle to his officers, withdrew to the rear with his train of clergy and licentiates, the last of whom did not share in the ambition of their rebel brother, Cepeda, to break a lance in the field.
Gonzalo Pizarro formed his squadron in the same manner as he had done on the plains of Huarina; except that the increased number of his horse now enabled him to cover both flanks of his infantry. It was still on his fire-arms, however, that he chiefly relied. As the ranks were formed, he rode among them, encouraging his men to do their duty like brave cavaliers, and true soldiers of the Conquest. Pizarro was superbly armed, as usual, and wore a complete suit of mail, of the finest manufacture, which, as well as his helmet, was richly inlaid with gold.25 He rode a chestnut horse of great strength and spirit, and as he galloped along the line, brandishing his lance, and displaying his easy horsemanship. he might be thought to form no bad personification of the Genius of Chivalry. To complete his dispositions he ordered Cepeda to lead up the infantry for the licentiate seems to have had a larger share in the conduct of his affairs of late, or at least in the present military arrangements, than Carbajal. The latter, indeed, whether from disgust at the course taken by his leader, or from a distrust, which, it is said, he did not affect to conceal, of the success of the present operations, disclaimed all responsibility for them, and chose to serve rather as a private cavalier than as a commander.26 Yet Cepeda, as the event showed, was no less shrewd in detecting the coming ruin.
When he had received his orders from Pizarro he rode forward as if to select the ground for his troops to occupy; and in doing so disappeared for a few moments behind a projecting cliff. He soon reappeared, however, and was seen galloping at full speed across the plain. His men looked with astonishment, yet not distrusting his motives, till, as he continued his course direct towards the enemy's lines, his treachery became apparent. Several pushed forward to overtake him, and among them a cavalier, better mounted than Cepeda. The latter rode a horse of no great strength or speed, quite unfit for this critical manoeuvre of his master. The animal, was, moreover, encumbered by the weight of the caparisons with which his ambitious rider had loaded him, so that, on reaching a piece of miry ground that lay between the armies, his pace was greatly retarded.27 Cepeda's pursuers rapidly gained on him, and the cavalier above noticed came, at length, so near as to throw a lance at the fugitive, which, wounding him in the thigh, pierced his horse's flank, and they both came headlong to the ground. It would have fared ill with the licentiate, in this emergency, but fortunately a small party of troopers on the other side, who had watched the chase, now galloped briskly forward to the rescue, and, beating off his pursuers, they recovered Cepeda from the mire, and bore him to the president's quarters.
He was received by Gasca with the greatest satisfaction,—so great, that, according to one chronicler, he did not disdain to show it by saluting the licentiate on the cheek.28 The anecdote is scarcely reconcilable with the characters and relations of the parties, or with the president's subsequent conduct. Gasca, however, recognized the full value of his prize, and the effect which his desertion at such a time must have on the spirits of the rebels. Cepeda's movement, so unexpected by his own party, was the result of previous deliberation, as he had secretly given assurance, it is said, to the prior of Arequipa, then in the royal camp, that, if Gonzalo Pizarro could not be induced to accept the pardon offered him, he would renounce his cause.29 The time selected by the crafty counsellor for doing so was that most fatal to the interests of his commander.
The example of Cepeda was contagious. Garcilasso de la Vega, father of the historian, a cavalier of old family, and probably of higher consideration than any other in Pizarro's party, put spurs to his horse, at the same time with the licentiate, and rode over to the enemy. Ten or a dozen of the arquebusiers followed in the same direction, and succeeded in placing themselves under the protection of the advanced guard of the royalists.
Pizarro stood aghast at this desertion, in so critical a juncture, of those in whom he had most trusted. He was, for a moment, bewildered. The very ground on which he stood seemed to be crumbling beneath him. With this state of feeling among his soldiers, he saw that every minute of delay was fatal. He dared not wait for the assault, as he had intended, in his strong position, but instantly gave the word to advance. Gasca's general, Hinojosa, seeing the enemy in motion, gave similar orders to his own troops. Instantly the skirmishers and arquebusiers on the flanks moved rapidly forward, the artillery prepared to open their fire, and "the whole army," says the president in his own account of the affair, "advanced with steady step and perfect determination." 30