Having assembled a body of troops, Centeno used every effort to provide them with arms and all other necessary equipments. He placed guards at all the passes, to prevent any intelligence from being conveyed to the enemy till his affairs were in proper order. He sent likewise Lopez de Mendoza one of his captains, first to Porco and thence to Arequipa to collect as many men as possible, and to endeavour to arrest Pedro do Puentes the lieutenant of Gonzalo at Arequipa. But Puentes fled immediately from Arequipa on receiving intelligence of the events which had occurred at Las Charcas. Mendoza therefore took possession of Arequipa without resistance; whence he reinforced himself with all the men, arms, and horses, he could procure, and carried off all the money he could find, with which and his reinforcement he returned to Centeno at La Plata.

On the return of Mendoza, Centeno found himself at the head of two hundred and fifty men well equipped for war, to whom he explained his sentiments and views, and gave an account of the criminal usurpation of Gonzalo Pizarro, in the following terms. "You know that Gonzalo, on leaving Cuzco, pretended merely to present the humble remonstrances of the colonists respecting the obnoxious regulations; and you have been informed that, even at the outset, he put to death Gaspard de Roias, Philip Gutierrez, and Arias Maldonado. You have learnt how he conspired with the judges of the royal audience and other inhabitants of Lima, to arrest and depose the viceroy, both of which were done accordingly. After this, while at the very gates of Lima, and before his public entry into that city, he sent in his lieutenant-general, who arrested many of the most considerable and richest inhabitants of the country, under the eyes of the judges, merely because these men had joined the viceroy, and even hanged three of them without any form of trial, Pedro de Barco, Martin de Florencia, and Juan Saavedra. He in the next place has broken up the royal court of audience, sending off its judges to different places, having in the first place obliged them to appoint him to the government. He has since, as you well know, caused many others to be put to death, merely on suspicion that they were favourable to the viceroy, and intended to join his party. Not satisfied with all this, he has seized all the treasure belonging to his majesty in the different receipts of the colony, and has imposed excessive contributions on the inhabitants, from whom he has exacted above 150,000 ducats by means of taxes imposed at his own pleasure. Adding crime to crime, he has again levied forces against the authority of his majesty, with which he has marched against the viceroy, and has carried insubordination and confusion into every part of the country; permitting and encouraging many to hold public discourse contrary to the respect and obedience which is due to his majesty. They were likewise aware, that Gonzalo had token away the repartimientos, or allotments of lands and Indians from many persons, and had converted them to his own emolument. Finally, he laid before them the strong obligations by which they were all bound, as faithful subjects, to exert their utmost endeavours in the service of their sovereign, lest they should draw upon themselves the imputation of being rebels and traitors." By these representations, and others which it were tedious to repeat, he disposed his auditors to concur in his loyal sentiments, and willingly to obey his orders. After this, Centeno sent one of his captains with a detachment to Chicuito, a place belonging particularly to the king, between Orcaza and Las Charcas, with orders to guard the passes with the utmost vigilance, till he and the royalists were in full readiness to execute their principal enterprize, as will be related in the sequel.

Notwithstanding every precaution employed by Centeno to conceal his operations and intentions, it was impossible to prevent intelligence from spreading in various directions, more especially after the expedition of Mendoza to Arequipa. Every thing he had already done, even the number of his troops, and of the musquets and horses he had collected, was fully known, by means of Indians and Spaniards who had escaped from La Plata, in spite of the guards which had been set, to watch the passes of the mountains. Alfonso de Toro, who acted as lieutenant governor of Cuzco under Gonzalo Pizarro, happened at this time to be a hundred leagues to the northward of that city, keeping guard in one of the passes of the mountains, as by letters from Gonzalo the viceroy was reported to have gone into the mountainous country, and was supposed to have directed his march by that road toward the south of Peru. On receiving notice of the late revolution at La Plata, De Toro returned in all diligence to Cuzco, where he levied forces to oppose Centeno; and, having assembled the magistrates and principal inhabitants of Cuzco, he informed them of what had occurred at Las Charcas, and as there was a sufficient force in Cuzco to suppress the royalists, he thought it incumbent on him to march to La Plata for that purpose. To gain them over to his purpose, he represented that Centeno had revolted without any just cause, and had usurped authority in Las Charcas for his own private ends, under pretence of serving the king; whereas Gonzalo Pizarro, being actual governor of the kingdom of Peru, ought to be obeyed as such till his majesty sent orders to the contrary. That the revolt of Centeno, being both criminal in itself and contrary to the law, every one was bound to resist him, and to punish his temerity. He recalled to their remembrance, that Gonzalo Pizarro was engaged in serving the general interest of the colonists, to procure the revocation of the obnoxious ordinances, in which common cause he had exposed his fortune and personal safety to every hazard, as it was well known that every inhabitant of Peru would be stripped of his property if the regulations were put in force. That besides the general advantage procured by Gonzalo in setting aside the obnoxious regulations, for which all were infinitely indebted to him, it was obvious that he had not in any respect conducted himself contrary to the royal orders, and had not in any manner set himself against the authority of the sovereign; since, on his arrival at Lima for the purpose of presenting their remonstrances, the judges of the royal audience had already arrested the viceroy and sent him out of the kingdom, of which these judges had appointed Gonzalo interim governor; and that in marching in a warlike manner against the viceroy, he had acted at the request and by the orders of the royal audience; as was manifest by his being accompanied by Cepeda, one of the royal judges and chairman of the audience. He asserted that no person in Peru could take upon him to determine whether the audience had acted right or otherwise in conferring the government on Gonzalo; and that it was the duty of all to support him in that office, till they received the ulterior orders of the sovereign.

At the close of this discourse, every one acknowledged the justice of what he had represented, and voluntarily offered to support Gonzalo with their lives and fortunes; although in reality most of them did so more from fear than good will, as they stood in great awe of De Toro, who had hanged several persons in a summary manner, and had made himself universally dreaded by his cruel and ferocious disposition and conduct, so that no one dared to oppose or contradict him in any thing. After a short deliberation, a set of resolutions were entered into, in which the transactions of Centeno in Las Charcas were recited as seditious and unlawful, and he was declared to have assassinated Francisco de Almendras, the lieutenant governor, to have levied forces in rebellion against the legitimate government, and to have passed the boundaries of the province of Las Charcas in hostile manner; for all which reasons it was just and proper to make war upon him, and to reduce him to obedience. All this was done principally to satisfy or to amuse the people, and to make them believe that the partizans of Gonzalo acted reasonably and lawfully, as all those who signed these resolutions were perfectly aware of the real state of affairs. In reality, although matters were thus represented in the popular assemblages, in justification of the measures of the insurgent party, or at least to excuse their actions under specious pretences, those who took an active part on the present occasion, used often to declare, both in the presence and absence of Gonzalo, that the king would certainly give, or ought to give him the government of Peru, as they were resolved not to receive any other person in that capacity, such being the resolution of Gonzalo in which they all concurred.

Alfonso de Toro now proceeded to levy an army, of which he declared himself captain general and commander in chief, and appointed captains and other officers to command under his authority. In all his proceedings he carried himself with a high hand, employing force and violence, instead of persuasion and good treatment. He protested publickly and with many oaths, that he would hang up every one who did not assist and contribute to the cause; and even had several persons carried to the foot of the gallows, whose lives he was induced to spare by dint of solicitations. He abused and maltreated others, using everyone in the most outrageous manner who did not give way to him in all things. By this violent procedure he completed his warlike preparations at very small expence; insomuch that it appeared afterwards by his accounts, that he had not expended above twenty thousand crowns in this expedition, as he took away gratuitously all the horses that were to be found in Cuzco, and constrained all the inhabitants who were able to carry arms to accompany him in the expedition against Centeno. By these means De Toro collected three hundred men, tolerably armed and equipped, with which he marched from Cuzco to a place named Urcos, about six leagues from that city, where he remained three weeks in anxious expectation of intelligence from Las Charcas: But all the roads and passes between and La Plata, were so well guarded by the Indians, who were entirely disposed to favour Centeno, that he was unable to learn any thing of the movements or intentions of the royalists in Las Charcas, so that he was constrained to remain continually on the alert lest he might have been surprized. Besides these military precautions, he rigorously punished all who presumed to show the slightest disinclination towards the interest of the Pizarrian faction, or to express their sentiments in any respect in disapprobation of his own designs; insomuch that all were constrained from dread of punishment to appear heartily attached to the cause in which he was engaged.

After remaining three weeks encamped at Urcos, he determined to march in search of Centeno, and advanced for that purpose to the village named Del Rey. As the troops of Centeno happened to be a good deal scattered at this time, he was under the necessity of retreating on the approach of De Toro. These hostile chiefs being encamped at the distance of about twelve leagues, entered into a negotiation to endeavour to form an accommodation; but, as they were unable to agree upon any terms, De Toro advanced for the purpose of attacking Centeno; who, on the other hand, was unwilling to risk the chance of an engagement, owing to the inferiority of his force, and because a defeat might have dispirited his own party and have been of great advantage to the cause of the insurgents. On this account he retired in proportion as De Toro advanced, accompanied by a great number of large Peruvian sheep loaded with provisions and ammunition, and carrying along with him all the principal curacas or native chiefs, to prevent De Toro from being able to avail himself of the assistance of the Indians. In this manner Centeno continued to retreat across a desert and uninhabited country of forty leagues extent, till he arrived at a place named Casabindo, through which Diego de Roias had formerly descended from the elevated region of Peru into the eastern plain of the Rio de la Plata. Alfonso de Toro continued the pursuit as far as the city of La Plata, which is an hundred and eighty leagues to the south of Cuzca. Finding that place abandoned and entirely stript of every thing which might contribute to the subsistence of his troops, and being unable to procure provisions on account of the absence of all the curacas or caciques, he was under the necessity to discontinue his pursuit of Centeno, and even found himself compelled to return towards Cuzco. In this retreat, De Toro took the command of the advanced guard of fifty men, ordering the main body to march at leisure, and left a rear-guard of thirty of his best mounted cavalry under Alfonso de Mendoza, with orders to use every possible means of procuring intelligence of the motions of Centeno; that, in case of his following, the troops might be collected together in good order to rejoin the van.

The departure of De Toro from La-Plata on his return to Cuzco was soon communicated to Centeno by means of the Indians. He was astonished at this sudden alteration of affairs; and, as he understood that De Toro marched in great hast, without keeping his troops in close array, he supposed that circumstance to have been occasioned by De Toro entertaining suspicions of the fidelity of his followers, and that he had found them ill-disposed towards the party of the Pizarrians. On these considerations, Centeno resolved to pursue in his turn, in hope of drawing some advantage to the cause in which he was engaged from this measure, and even expecting that several of the followers of Toro might come over to his side. He sent off therefore the captain Lope de Mendoza with fifty light armed cavalry in pursuit of the enemy. Mendoza got in a short time to Collao; and, although de Toro and most of his troops had already passed beyond that place, he made prisoners of about fifty who remained behind, whom at first he deprived of their horses and arms. Soon afterwards, however, he returned these to his prisoners, and even distributed some money among them, receiving their engagements upon oath to join him when required; but he hanged a few of them who were suspected of being particulary attached to De Toro. After this successful exploit, Lope returned in great haste to La Plata, in hope of being able to cut off Alfonzo de Mendoza and his small party, who still occupied that place. But Alfonzo had received intelligence of what had happened at Collao, and had already quitted La Plata in great haste, taking a different road from that pursued by Lope, by which means he got safe to Cuzco.

Centeno arrived soon afterwards at La Plata with the remainder of his troops, where he assembled all the force under his command, and where he made every possible preparation for continuing the war to advantage, and in particular caused a number of musquets to be made. De Toro continued his retreat to Cuzco, dreading much to be pursued, and lest Centeno might have acquired possession of Cuzco, which he might easily have accomplished in the present situation of affairs; but Centeno thought it more prudent to remain at La Plata, where he augmented the number of his troops and collected treasure which was found in great plenty in the province of Las Charcas.

The events which had taken place in Las Charcas were soon known at Lima; and as several of the soldiers in that city were attached to the party of the viceroy, they spoke almost openly of going away to join Centeno; and, from the small attention paid by Lorenzo de Aldana to repress these men, he was even suspected of favouring the same cause. Antonio de Ribera likewise, although the brother-in-law of Pizarro, was strongly suspected of being secretly devoted to the royal interest, as indeed his conduct in the sequel evinced; and several other persons of consideration lay under suspicions of the same nature. All this gave much uneasiness to the friends of Pizarro: Yet those persons at Lima who wished well to the interests of his majesty, did not think it prudent at this time to make any open attempt, being satisfied that it was better to wait a more favourable opportunity, and that De Aldana would prepare matters for that purpose, as he seemed clearly favourable to the same cause. His abilities were universally acknowledged, and his good intentions were not doubted, so that all were satisfied that he would conduct matters with much prudence to a favourable issue.

At this time it became known at Lima that the viceroy had retreated with a small body of troops into the province of Popayan; and that during his retreat he had put to death several of the officers and other persons of consideration in his army; among whom were Rodrigo de Ocampo, Jerom de la Cerna, Gaspard Gil Olivarez and Gomez Estacio; some of these because they were inclined to abandon him, and others for corresponding with Gonzalo Pizarro, and conspiring to put the viceroy to death. On the communication of this intelligence at Lima, it produced different effects according to the different inclinations and views of the inhabitants. It occasioned more reserve among those who were of loyal dispositions; whereas the partizans of the Pizarrian tyranny considered themselves more at liberty to avow their sentiments to Aldana. They went therefore to him in a body, and represented that there were many persons in Lima who were strongly suspected of being hostile to Gonzalo Pizarro, and only waited a favourable opportunity to take up arms against him; and that it was incumbent therefore on the lieutenant governor to punish these men for the scandalous freedoms in which they had indulged, or at least to banish them from the city. They offered to furnish sufficient proof of these facts, and urged him to exert his authority on the occasion. Aldana assured them that none of these things had ever come to his knowledge; and that if he knew who those were against whom they complained, he would take such measures as were necessary on the occasion.