Gonzalo and his lieutenant-general, Carvajal, had formed an arrangement for a night attack upon the president, intending to have assailed his camp in three points at the same time; but they were induced to abandon this project, in consequence of the desertion of one of their soldiers named Nava, who communicated their intentions to the president. By this person and some others who had joined him from the army of Gonzalo, the president was advised to delay coming to battle as long as possible; as they were certain that many of the followers of Gonzalo would take the first favourable opportunity of returning to their duty, more especially those soldiers who had served under Centeno, and who had been constrained after his defeat to enter into the ranks of the insurgents to save their lives. In expectation of the proposed attack, the president kept his army the whole of that night under arms, by which they suffered, much distress from the extreme coldness of the weather on the mountain, so that many of the soldiers were hardly able to keep hold of their arms, and waited impatiently for day. At daylight, a party of musqueteers belonging to Gonzalo was observed in march to gain possession of a height in the neighbourhood of the royal camp. Mexia and Palomino were immediately detached, with three hundred musqueteers, to dislodge them, and Valdivia and Alvarado advanced in the same direction, so that the enemy were soon forced to retire. During this skirmish, the president marched down from the mountain with the main body of his army, in the direction of Cuzco, under cover of the hill on which the skirmish had taken place; and, to distract the attention of the enemy, a small detachment of cavalry and infantry was ordered to advance in view of the insurgent camp from that hill. On the arrival of Valdivia and Alvarado at the top of the hill, observing that it was possible to cannonade the camp of the enemy from that place, they sent orders to Gabriel de Royas to bring up the artillery. On this occasion, De Royas promised a reward of five hundred crowns for each ball that should reach the enemy: In fact he paid that sum about a year afterwards to one of his gunners, who sent a ball through the tent of Gonzalo, which was exceedingly conspicuous, by which one of his pages was slain. In consequence of this incident, Gonzalo ordered all the tents to be struck, that they might not serve as marks for the cannoneers of the president. He likewise ordered his own artillery to commence firing, and drew up his army in order of battle, taking his own station at the head of his cavalry, which was commanded by the licentiate Cepeda and Juan d'Acosta. Carvajal was at the head of the infantry, having under him the captains Juan de la Torre, Diego Guillen, Juan Velasquez de Guevara, Francisco Maldonado, and Sebastian de Vergara. Pedro de Soria commanded his artillery. When the insurgent army was drawn up in order of battle, the