[Footnote 47: Although Garcilasso omits the date of the year, it probably was in 1554, as the rebellion of Giron commenced in the November immediately preceding.--E.] In the mean time pursuing his march, Alvarado and his army entered upon the desert of _Parihuanacocha_, where above sixty of his best horses died, in consequence of the bad and craggy roads, the unhealthiness of the climate, and continued tempestuous weather, though led by hand and well covered with clothes. When the two armies approached each other, Alvarado sent a detachment of an hundred and fifty select musqueteers to attack the camp of Giron, and marched forwards with the main body of his army to support that detachment. An engagement accordingly took place in rough and strong ground, encumbered with trees brushwood and rocks, in which the royalists could make no impression on the rebels, and were obliged to retire with the loss of forty of their best men killed or wounded. In the following night, Juan de Piedrahita endeavoured ineffectually to retaliate, by assailing the camp of Alvarado, and was obliged to retreat at daybreak. Receiving notice from a deserter that the rebel army consisted only of about four hundred men, in want of provisions, and most of them inclined to revolt from Giron and return to their duty, Alvarado determined upon giving battle, contrary to the opinion and earnest advice of all his principal officers and followers. But so strong was the position of the enemy, and the approaches so extremely difficult, that the royal army fell into confusion in the attack, and were easily defeated with considerable loss, and fled in all directions, many of them being slain by the Indians during their dispersed flight. On receiving the afflicting news of this defeat, the judges ordered the army which they had drawn together at Lima to march by way of Guamanga against the rebels. In the mean time Giron remained for forty days in his camp at Chuquinca, where the battle was fought, taking care of his wounded men and of the wounded royalists, many of whom now joined his party. He sent off however his lieutenant-general towards Cuzco in pursuit of the royalists who had fled in that direction, and ordered his sergeant-major to go to La Plaz, Chucuito, Potosi, and La Plata, to collect men arms and horses for the farther prosecution of the war. At length Giron marched into the province of Andahuaylas, which he laid waste without mercy, whence he went towards Cuzco on receiving intelligence that the army of the judges had passed the rivers Abancay and Apurimac on their way to attack him. He immediately marched by the valley of Yucay to within a league of Cuzco, not being sufficiently strong to resist the royalists; but turned off from that city at the persuasion of certain astrologers and prognosticators, who declared that his entrance there would prove his ruin, as had already happened to many other captains, both Spaniards and Indians.