Observing that several of the soldiers of Gonzalo were endeavouring to abandon him and were hotly pursued, Centeno and Mendoza advanced with the cavalry under their command, on purpose to protect all who wished to come over. All those who quitted the insurgents, urged the commanders of the royal army not to advance to the charge, as they were certain the far greater part of the army of Gonzalo would abandon him, so that he would be easily defeated without any danger to the royalists, and with little effusion of blood. At this time, a platoon of thirty musqueteers, finding themselves near the royal army, came over in a body and surrendered themselves. Gonzalo wished to have these men pursued and brought back; but the attempt threw his troops into confusion, and his whole army began instantly to break up, some fleeing towards Cuzco, while others went over to the president and surrendered themselves. Some of the insurgent officers were so confounded by this sudden and universal derout, that they neither had presence of mind to flee or to fight. On seeing this hopeless turn of his affairs, Gonzalo lost all courage, and exclaimed in despair, "Since all surrender to the king, so must I also." It is reported, that Juan d'Acosta endeavoured to encourage him, saying, "let us rush upon the thickest of the enemy, and die like Romans;" to which Gonzalo is reported to have answered, "It is better to die like Christians."
At this time, Gonzalo observing the serjeant-major of the royalists near him, surrendered to him, giving up a long small sword which he had used instead of a lance, as he had previously broken his lance upon some of his own men who were running away. He was immediately conducted to the president, to whom he used some very imprudent expressions, and by whom he was committed to the custody of Centeno. About the same time with Gonzalo, most of his officers were made prisoners. The lieutenant-general Carvajal endeavoured to save himself by flight, meaning to hide himself among some tall reeds in a marsh during the night; but his horse stuck fast in the morass, and he was brought prisoner to the president by some of his own men. In the pursuit, some of the insurgents were killed, but most of their officers were made prisoners.