Battle of Toro The Battle of Toro was a Royal battle from the War of the Castilian Succession , fought on 1 March 1476 , near the city of Toro , between the Castilian troops of the Catholic Monarchs and the Portuguese - Castilian forces of Afonso V and Prince John . It was a confusing and polemic battle with an inconclusive military outcome , as both sides claimed victory : the Castilian right wing was defeated by the forces under Prince John who possessed the battlefield , but the troops of Afonso V were beaten by the Castilian left - centre led by the Duke of Alba and Cardinal Mendoza . However , it was a major political victory for the Catholic Monarchs by assuring to Isabella the throne of Castile : what still remained of the noblemen loyal to Juana de Trastámara adhered to Isabella . With great political vision , Isabella took advantage of the moment and convoked courts at Madrigal - Segovia ( April – October 1476 ) . There her daughter was proclaimed and sworn heiress of the Castile ' s crown , which was equivalent to legitimizing her own throne . Spanish academic António M . Serrano : " “ From all of this it is deductible that the battle " < nowiki > [ of Toro ] < / nowiki > " was inconclusive , but Isabella and Ferdinand made it fly with wings of victory . ( . . . ) Actually , since this battle transformed in victory ; since 1 March 1476 , Isabella and Ferdinand started to rule in the Spain ' s throne . ( . . . ) The inconclusive wings of the battle became the secure and powerful wings of San Juan ' s eagle " < nowiki > [ the commemorative temple of the battle of Toro ] < / nowiki > " ” " . The war continued until the peace of Alcáçovas ( 1479 ) , and the official propaganda transformed the Battle of Toro in a victory which avenged Aljubarrota . The battle of Toro in a sentence . Spanish historians Luis Suárez Fernández , Juan de Mata Carriazo and Manuel Fernández Álvarez : " “ Not a military victory , but a political victory , the battle of Toro is in itself , a decisive event , because it solves the civil war in favour of the Catholic Monarchs , leaving as a relic , a border clash between the two countries " < nowiki > [ Castile and Portugal ] < / nowiki > " ( . . . ) ” " , La España de los Reyes Católicos ( 1474 – 1516 ) . Precedents . Background . in 1474 ignited a succession crisis in Castile with the formation of two rival parties : Isabella , the King ' s half sister , received the support of the majority of the noblemen , clerks and people , whereas Juana de Trastámara , the King ' s daughter , was supported by some powerful nobles . This rivalry degenerated in civil war with the Portuguese King Afonso V intervening in the defence of his niece Juana ' s rights , trying to unify Castile and Portugal as an alternative to the union of Castile with Aragon personified at Isabella ' s marriage with the heir of the Aragon ' s throne , Ferdinand . The Burgos expedition : turning point of the war . After some skirmishes , Afonso ' s V army marched to the help of the besieged castle inside Burgos . On the way , at Baltanás , it defeated and imprisoned a force of 400 spearmen of the Count of Benavente ( 18 - XI - 1475 ) and also took Cantalapiedra , reaching the distance of only 60 km from Burgos . The Castilian allies pressed Afonso V to advance to the south towards Madrid where they assured him many supporters . The King , who did not want to stretch his communication lines with Portugal , didn ' t listen to them and withdrew leaving Burgos to its fate . The city surrendered on 28 January 1476 , and Afonso ’ s prestige sank . It is the turning point of the war : Ocaña and other places changed side , the Estuñiga family defected , the mighty Marquis of Villena , Diego López Pacheco , denied his military support and the " Juanista " band began its dissolution . Zamora : prelude to the Battle of Toro . Afonso V preferred to secure its line of cities and fortresses along the Duero River . But on 4 December 1475 , a part of the Zamora ' s garrison - a key " Juanista " city - rebelled and besieged the inner fortress , where the Portuguese got refuge . On the next day Ferdinand II of Aragon entered the city . At the end of January 1476 , Afonso V received the reinforcement troops led by his own son , the " Perfect Prince " , and in the middle of February 1476 , the combined Portuguese forces besieged the Ferdinand ' s Army ( locked inside the city of Zamora ) , putting him in the curious situation of the besieger being besieged . After two cold and rainy weeks , the besiegers decided to leave and rest in the city of Toro . Ferdinand left in persecution and reached them near Toro , where both armies decided to engage in battle . Disposition of the forces . Isabelist army of D . Ferdinand . Centre : Commanded by Ferdinand II of Aragon , it included the royal guard and the forces of several " hidalgos " like the Count of Lemos and the " mayordomo mayor " Enrique Enriquez . Included mainly the popular militias of several cities like Zamora , Ciudad Rodrigo or Valladolid . Right wing : concentrated 6 divisions ( " " batallas " " or " battles " ) of light cavalry or jennets , commanded by their captains : Álvaro de Mendoza ( the main captain ) , the Bishop of Ávila and Alfonso de Fonseca ( these two men shared the command of one " battle " ) , Pedro de Guzmán , Bernal Francés , Vasco de Vivero and Pedro de Velasco . This wing is sometimes called vanguard as some of his men closely followed the Portuguese from Zamora to Toro . It was divided in two lines : five battles at the forefront and one in the rear . Left wing : included many knights with heavy armour and was divided in 3 forces : the left one , near the Portuguese , commanded by Admiral Enríquéz ; the centre one , led by Cardinal Mendoza , and on the right , the force headed by the Duke of Alba . It was the most powerful . Reserve forces : the men of Enrique Enríquez , Count of Alba de Aliste ( King Ferdinand ' s uncle and Galicia ' s governor , he will be taken prisoner by the Portuguese ) ; and the horsemen from the marquis of Astorga . The foot soldiers were in the middle of all those battles . In practical terms , the Isabelist army fought divided in two parts which didn ' t help each other : right wing and left - centre or Royal Battle due to the presence of Ferdinand . Portuguese - Castilian army of Afonso V / " The Perfect Prince " . Centre : commanded by Afonso V , included the knights of several noblemen from his House and the Castilian knights loyal to D . Juana led by Rui Pereira . It included 4 bodies of footmen with their backs turned to the Duero River . Right wing : troops of some Portuguese nobles and the Castilians of the Toledo ' s Archbishop , Alfonso Carrillo . Left wing : it was formed by the elite troops of the kingdom ( chevaliers ) and included the army ' s artillery ( arquebusiers ) and the javelin throwers . It was commanded by the " Perfect Prince " , who had the as his main captain . It included a rear guard battle led by Pedro de Meneses . Due to the split of the leadership between the King and the Prince , the Portuguese army also fought separated in two parts : left wing or Prince ' s battle and right - centre or Royal Battle . The battle . The " Perfect Prince " defeats the right wing of Ferdinand ' s army . The forces of Prince John and of the , formed by the arquebus iers , javelin throwers and by the Portuguese elite army ( knights ) , screaming " S . George ! S . George ! " , invested the 6 bodies or battles of the right wing of the Castilian army . The Prince attacked the five advanced battles and the battle of Pedro de Meneses attacked the other one . The Castilian forces ( which were very select , according to Jerónimo Zurita y Castro ) suffered heavy losses , and withdrew in disorder . Chronicler Hernando del Pulgar ( Castilian ) : " " promptly , those 6 Castilian captains , which we already told were at the right side of the royal battle , and were invested by the prince of Portugal and the bishop of Évora , turned their backs and put themselves on the run " " ' . Chronicler Garcia de Resende ( Portuguese ) : " " and being the battles of both sides ordered that way and prepared to attack by nearly sunshine , the King ordered the prince to attack the enemy with his and God ' s blessing , which he obeyed ( … ) . ( … ) and after the sound of the trumpets and screaming all for S . George invested so bravely the enemy battles , and in spite of their enormous size , they could not stand the hard fight and were rapidly beaten and put on the run with great losses . " " Chronicler Juan de Mariana ( Castilian ) : " “ ( . . . ) the " < nowiki > [ Castilian ] < / nowiki > " horsemen ( . . . ) moved forward ( … ) . They were received by prince D . John … which charge … they couldn ’ t stand but instead were defeated and ran away . ” " Chronicler Damião de Góis ( Portuguese ) : " " ( … ) these Castilians who were on the right of the Castilian Royal battle , received [ the charge of ] the Prince ’ s men as brave knights invoking Santiago but they couldn ’ t resist them and began to flee , and [ so ] our men killed and arrested many of them , and among those who escaped some took refuge ( … ) in their Royal battle that was on left of these six [ Castilian ] divisions . " " . Chronicler ( Basque ) : " “ ( . . . ) D . Alfonso de Fonseca first and then Álvaro de Mendoza ( . . . ) and other " < nowiki > [ captains ] < / nowiki > " begged the King " < nowiki > [ Ferdinand ] < / nowiki > " permission to be the first to attack the Prince ’ s squad ( . . . ) which was the strength of the Portuguese army , and the King authorized them , provided that the six battles named above remained together ( . . . ) . And facing the Prince ’ s squads ( . . . ) they were defeated , many of them dying due to artillery and javelin throwers ( . . . ) and this way , the victory in the beginning was for the Portuguese ( . . . ) ” " The Prince ' s men pursued the fugitives along the land . The Prince , not wanting to disperse his troops , decided to stop : " " and the prince , as an advised captain , seeing the great victory God had given to him and the good fate of that hour , chose to secure the honour of victory than follow the chase . " " ( Garcia de Resende ) But some of his men took the pursuit too far ( Rui de Pina says during a league , 5 km ) and are penalized : " " and some of the important people and others ( … ) in the heat of the victory chased so deeply " < nowiki > [ the fugitives ] < / nowiki > " that they were killed or captured . " " According to Rui de Pina , this happened because some of these fugitives , after a hard chase , gathered with one of the Ferdinand ' s battles on the rear and faced the most temerarious pursuers . Pulgar confirms this post chase episode : " " Many of those who were on those 6 Castilian battles defeated by the Prince of Portugal at the beginning , seeing the victory of the other king ' s battles on their respective side " < nowiki > [ left wing and centre ] < / nowiki > " , assembled with the people of the King and fought again ” " ( 3 hours after the beginning of the battle , according to him ) . Pulgar justifies the defeat of the " Isabelistas " with the fact that the Prince ' s " battle " attacked as a block , while the Castilians were divided in 6 battles . So , each of them was successively beaten off without benefiting from the help of the others . Other motive appointed by the same chronicler was " " the great loss " " suffered by the Castilians as a result of the fire from the many arquebusiers in the Prince ' s battle . Zurita adds that the Prince successfully attacked with such " " impetus " " that the remaining men from the Castilian army became " " disturbed " " . These events had important consequences . The Portuguese chroniclers unanimously stated what Rui de Pina synthesized this way : " " ( . . . ) king D . Ferdinand ( . . . ) as soon as he saw defeated his first and big battles " < nowiki > [ on the right ] < / nowiki > " , and believing the same fate would happen to his own battles at the hands of King Afonso ' s battles , was counselled to withdraw as he did to Zamora " " . Among the Castilians , Pulgar – the official chronicler of the Catholic Monarchs - says that Ferdinand withdrew from the battlefield for other reasons . Its justification : " " the King promptly returned to the city of Zamora " < nowiki > [ " volvió luego " ] < / nowiki > " because he was told that people from the King of Portugal , located in the city of Toro on the other side of the river , could attack the " estanzas " he left besieging the Zamora ' s fortress . And the cardinal and the duke of Alba stayed on the battlefield ( … ) . " " Not only Pulgar reveals that Ferdinand left the battlefield before cardinal Mendoza and the duke of Alba , but the expression " promptly returned " seems to indicate that the King stayed a small time on the battlefield , delegating the leadership on these two main commanders . On the other hand , it was highly improbable that Ferdinand risked helping Zamora in a Royal battle which was deciding the destiny of the entire kingdom of Castile . It would be inconceivable that the Portuguese garrison of Toro dared to attack the powerful and distant city of Zamora instead of helping the forces of his King and Prince which were fighting with difficulties practically at its gates . The victorious Prince ' s forces ( which included the best Portuguese troops ) were still on the field and were continuously raising its number with dispersed men converging to them from every corner of the field . According to the chivalry costumes of that time , to withdraw from the battlefield under these circumstances instead of confronting this new threat and not remaining 3 days on the battlefield - as a sign of victory - would be the proof that he had not won . Indeed , it is much more probable that Ferdinand had retreated to Zamora in the beginning of the battle as a consequence of the defeat of the right side of his army ( things could get worse ) . However , there ' s a sharp contrast between the prudent but orderly retreat of Ferdinand to Zamora and the precipitated escape of Afonso V to avoid imprisonment . The Royal Battle of Ferdinand defeats the Royal Battle of Afonso V . In the meantime , the other Castilian troops were fighting a fierce combat with their direct opponents . The Castilian centre charged the Portuguese centre while the Castilian left wing , superiorly commanded by Cardinal Mendoza and Duke of Alba , attacked the Portuguese right wing : " " … those from the battle of the King [ Castilian centre ] as well as those … from the left wing , charged [ respectively ] against the battle of the King of Portugal … and against the other Portuguese from their right wing . " " ( Pulgar ) Feeling the vacillation of his forces due to the Portuguese attack on the other end of the battlefield , the cardinal advanced and shouted : " here is the cardinal , traitors ! " . He would be wounded but continued fighting with bravery . The Portuguese started to break . The fight around the Portuguese royal standard was ferocious : having the flag carrier ' s ( the ensign ) hand cut off , he transferred the banner to the remaining hand which was also cut off . So he sustained the standard on the air with his teeth until he fainted under the wounds inflicted by the enemies which surrounded and captured him . Afonso V , seeing his standard lost and supposing he had equally beaten his son ’ s forces ( which were smaller than his ) sought death in combat , but was prevented from doing so by those around him . They took him to Castronuño where he was welcomed by the " alcalde " . By then the Portuguese disbanded in all directions , dying many of them drowned in the Duero River because of the darkness and confusion . The Castilians captured 8 flags and sacked the Portuguese camp . painted a grandiose picture of the loot mentioning many horses , prisoners , gold , silver and clothes , which was doubtful given the dark and rainy night described by the chroniclers . In fact , Pulgar recognizes that the product of the loot was modest : " " and the people who participated on the battle during the previous day divided the captured spoils : which were in small quantity because it was a very dark night " . " Pulgar : " " At last the portuguese couldn ’ t stand the mighty force of the castilians and were defeated , and they ran seeking refuge in the city of Toro . ( . . . ) " < nowiki > [ the ] < / nowiki > " Portugal ' s King seeing the defeat of his men , gave up of going to Toro to avoid being molested by the men of the King " < nowiki > [ Ferdinand ] < / nowiki > " , and with three or four men of all those who were responsible for his security went to Castronuño that night . ( . . . ) consequently many Portuguese were killed or taken prisoners . . . " " Pulgar wrote that during the battle many Castilians died and also many Portuguese , but while the Castilians died fighting , the Portuguese drowned trying to escape by swimming across the river Duero . Rui de Pina justifies the Portuguese Royal Battle ' s defeat with the fact that the best Portuguese troops were with the Prince and were missed by the King , and also because there were many arquebusiers in the Castilian Royal Battle whose fire scared the Portuguese horses . With the darkness of the night and the intense rain , chaos reigned . There were dispersed men from all sides : fugitives from the Castilian right wing , Portuguese pursuers , fugitive soldiers from the Portuguese King , the Cardinal Mendoza ’ s men and the Duke of Alba ’ s men were divided between pursuing the Portuguese and sacking their spoils and still ; the Prince ’ s men returned in the meantime . The battle field became a very dangerous place where the minimal error could lead to death or imprisonment . As an example and according to Pulgar , some Portuguese shouted " " Ferdinand , Ferdinand ! " " to lure their pursuers making them think they were Castilians . As a consequence of this triumph , Ferdinand promptly sent a letter to the cities of Castile claiming victory , but without mentioning neither the defeat of part of his forces nor the retreat of his remaining troops when faced with the forces of Prince John , who possessed the camp and also claimed victory . Later , the " Perfect Prince " also sent a letter to the main cities of Portugal , Lisbon and Porto , ordering the commemoration of his triumph on the battle of Toro ( but not mentioning his father ' s defeat ) with a solemn procession on each anniversary of the battle . Isabella immediately ordered a thanks giving procession at Tordesillas , and in many other cities feasts and religious ceremonies were organized to celebrate the great " " victory God has given to the King and to her people . " " She also would build a magnificent commemorative Gothic temple at Toledo , the Monastery of S . Juan de los Reyes , to dissipate any doubts and perpetuate her victory . As the Historian Justo Gonzalez summarizes : " " Both armies faced each other at the camps of Toro resulting in an undecided battle . But while the Portuguese King reorganized his troops , Ferdinand sent news to all the cities of Castile and to several foreign kingdoms informing them about a huge victory where the Portuguese were crushed . Faced with these news , the party of “ la Beltraneja " " < nowiki > [ Juana ] < / nowiki > " was dissolved and the Portuguese were forced to return to their kingdom . " " The key of the war was the Castilian public ' s opinion and not the Portuguese ' s . The Perfect Prince becomes master of the battlefield . Meanwhile Prince John returned after a brief chase , defeating one of the Castilian battles where the men were dispersed looting the spoils of the defeated Portuguese . However , faced with other enemy battles , he abdicated from attacking and put his men in a defensive position on a hill . He lighted big fires and played the trumpets to guide all the Portuguese spread throughout the camp towards him and to defy the enemies . He acted this way because , according to the chronicler Álvaro Chaves , the Prince ' s forces were under - numbered as most of his men had gone in pursuit of the adversaries : " " ( . . . ) " < nowiki > [ the Prince ] < / nowiki > " turned against the battles of king D . Ferdinand , but because the people from his battles spread in the pursue of the defeated , the enemy ' s battle outnumbered the few men that remained with him , but in spite of that he attacked and defeated it and he went on until he faced other enemy battles , and then he stopped his battle to recover some of his dispersed men ( . . . ) because the enemy had the triple of his people . " " Pulgar : " " And because the people of his father and King were defeated and dispersed , the Prince of Portugal went up to a hill and played the trumpets and lighted fires in order to recover some of the fugitives and stood on with his battle . . . " " The Prince ' s men took some prisoners , among them King Ferdinand ' s uncle , D . Enrique , Count of Alba de Liste , and for his great joy they retook his father ' s royal standard as well as the Castilian noble who carried it , Souto Mayor ( according to the chroniclers Rui de Pina , Garcia de Resende Damião de Góis ) . With the Prince ' s forces increasing continuously , no military leader could be considered winner without defeating this new threat , which included the Portuguese elite troops who had defeated the Castilian right wing . Zurita : " " This could have been a very costly victory if the Prince of Portugal , who always had his forces in good order , and was very near the river banks , had attacked our men who were dispersed and without order " . " The Cardinal Mendoza and the Duke of Alba began to join their dispersed men to remove the new threat : " " against who " < nowiki > [ Prince John ] < / nowiki > " the Spain ' s cardinal as well as the Duke of Alba intended to go with some men that they were able to collect from those returned from the chase and from those who were spread around the camp capturing horses and prisoners . . . " " ( Pulgar ) . Two great heterogeneous battles ( a Portuguese and a Castilian one ) formed this way , standing face to face and playing musical instruments to intimidate each other : " " ( . . . ) so close were the men from one part and the other , that some knights went out of the battles to invest with the spears " < nowiki > [ individual combats ] < / nowiki > " " " ( Álvaro Lopes ) . But the Cardinal and the Duke of Alba couldn ' t convince their men to move and attack the Prince ' s forces : " " ( . . . ) and they couldn ' t join and move the men " " ( Pulgar ) . That ' s corroborated by the Portuguese chronicler Garcia de Resende : " " being very close to him " < nowiki > [ the Prince ] < / nowiki > " so many men of King D . Ferdinand , they didn ' t dare to attack him because they had seen his men fighting so bravely and observed the security and order of his forces ( . . . ) " " Pulgar felt the necessity to justify the fact that the Castilians , which assumed the victory , didn ' t attack the victorious Prince and have instead retreated to Zamora : " " ( . . . ) because the night was so dark they " < nowiki > [ the Castilians ] < / nowiki > " couldn ' t neither see nor recognize each other and because the men were so tired and haven ' t eaten all day as they left Zamora by morning ( . . . ) and turned back to the city of Zamora . " " Those circumstances which applied to the enemy as well , didn ' t explain the Castilian behaviour : the chronicles of both sides show that the Prince ' s battle kept increasing ( making a " " gross battle " " ) because towards it moved many defeated and fugitives from the Royal Battle and also the Prince ' s men coming back from the enemy ' s chase , and even contingents of soldiers from Toro , which crossed the battlefield to reinforce the Prince . Thus , if all these men could reach the Prince , the Castilians could do it too , especially because the two battles ( the Portuguese and the Castilian ) were so proximal that the men could listen to each other : " " ( . . . ) being so close to each other " < nowiki > [ the Portuguese and the Castilians ] < / nowiki > " that they could hear what they talked about ( . . . ) " " ( Garcia de Resende ) . At last the Castilians withdrew in disorder to Zamora . Rui de Pina : " " And being the two enemy battles face to face , the Castilian battle was deeply agitated and showing clear signs of defeat if attacked as it was without King and dubious of the outcome . ( . . . ) And without discipline and with great disorder they went to Zamora . So being the Prince alone on the field without suffering defeat but inflicting it on the adversary he became heir and master of his own victory " " . Damião de Góis : " " being the night so advanced ( . . . ) the Castilians left the camp in small groups ( . . . ) and neither the Cardinal of Castile nor the duke of Alba could impose them order ; they also went to Zamora with the men who remained with them in the most silent way possible as all the people had fled ( . . . ) and the Prince realizing their retreat didn ’ t pursue them ( . . . ) because he feared " < nowiki > [ that the Castilian retreat was ] < / nowiki > " a war trap , but that wasn ’ t the intention of the Castilians because by morning not a soul was seen on the field ( . . . ) , resulting in a victorious Prince with all his people in order ( . . . ) ” " Álvaro de Chaves : " " They abruptly left the camp towards Zamora as defeated men " " Garcia de Resende : " " And after the Prince had been most of the night on the battlefield , and seeing that the enemy had fled leaving no soul behind , and having nothing more to do , he decided to stand on the camp for three days ( . . . ) ” " . ' He would be convinced by the Toledo ' s Archbishop to stay there only 3 hours as a symbol of the 3 days . After defeating his direct opponents and because of the dark and rainy night , Prince John ' s tactical choice had been to prevent the dissemination of his forces during the subsequent chase and slowly join the scattered men from all proveniences - recovering his lost operational power - and keeping them ordered to attack the Castilians early the next day . The Prince made a triumphal march towards Toro , carrying his Castilian prisoners and " " with his flags draping and at the sound of trumpets . " " But very soon the sadness dominated him because nobody knew where his father , the King , was . Besides that , the city of Toro was chaotic , with its gates closed because the Portuguese mistrusted their Castilian allies who they accused of treason and blamed for the defeat of their King . The Prince ordered the gates to be opened , restored the order and on the next day he sent a force to Castronuño , which brought back the King . He also " " sent some of his captains to the battlefield to bury the dead and to redact a victory act , which was entirely made without contradiction " " . The fact that the Portuguese remained masters of the battlefield is documented in contemporary sources from both sides : Pulgar first states that King Ferdinand withdrew from the battlefield to Zamora before Cardinal Mendoza and the Duke of Alba , and then he declares that his army ( now under command of the Cardinal and Duke ) also withdrew from the battlefield to Zamora – after an attempt to attack Prince John , who was thus left in possession of the battlefield . And explicitly wrote that the Prince only returned to Toro after the withdrawal of Ferdinand ’ s army : " “ The people of King D . Ferdinand , both horsemen and peons , plundered the camp and all the spoils they found in front of the Prince of Portugal , who during that night never moved from top of a hill , until ( … ) King D . Ferdinand left to Zamora with his people plus the spoils . Then , the Prince of Portugal left to Toro . ” " Juan de Mariana corroborates him : " “ ( . . . ) the enemy led by prince D . John of Portugal , who without suffering defeat , stood on a hill with his forces in good order until very late ( . . . ) . Thus , both forces " < nowiki > [ Castilians and Portuguese ] < / nowiki > " remained face to face for some hours ; and the Portuguese kept their position during more time ( . . . ) " " Balance . The Portuguese chronicles agree with the Castilian official chronicler Pulgar in most of the essential facts about the battle of Toro . Both show that the strongest part of each army ( the Castilian and Portuguese left wings , respectively led by Cardinal Mendoza and Prince John ) never fought each other : only at the end , says Pulgar , there was an unsuccessful attempt of Cardinal Mendoza and Duke of Alba to attack the forces of the Prince , quickly followed by a withdrawal of the Castilian army to Zamora . This was probably decisive for the final outcome of the battle , because each one of the armies won where it was stronger . Naturally the Castilian and Portuguese chroniclers focused their attention on their respective victory . The polemic . Indeed , the Battle of Toro consisted almost in two separated combats : one won by the troops of Prince John and the other by Ferdinand ' s forces . None of the intervenients had access to a global vision of the battle due to the geographic separation of the two engagements and also because of the darkness , fog and rain . Therefore , it is natural that separated combats with different outcomes have originated different versions among the chroniclers of both sides , and as revealed by Pulgar , between Castilians and Portuguese : " " there held the old question about the force and bravery ” . " Due to all of this , the only way to get a historical and impartial reconstitution of the Battle of Toro is by analyzing the sources of both sides . In fact , there is not an essential contradiction between the victory proclamations of both sides . As observed by the Spanish academic Luis Suárez Fernández : " " But this document " < nowiki > [ Ferdinand ' s letter communicating his victory to the cities ] < / nowiki > " of great importance does not contain more than the bare attribution of the victory to the Castilian arms , and doesn ’ t contradict in any way the reality of one part of the Portuguese army , winner of one of the " < nowiki > [ Castilian ] < / nowiki > " wings , staying on the camp and being able to retreat on the next day without being hindered . Neither is contradiction in the admission that being a dubious business it represented a very great political victory to Ferdinand and Isabella as it finished what still remained from the Juana ’ s party . " " The Portuguese royal standard . The Portuguese chroniclers unanimously affirm that the Portuguese royal standard was retaken to the enemy by Gonçalo Pires , whose nickname became Bandeira ( in Portuguese it means " Flag " ) in memory of that deed and so he became Gonçalo Pires Bandeira ( coat of arms chart conceded on 4 July 1483 by King John II ) . The Castilian who carried it - Souto Mayor - was captured and the others fled . On the other hand , although most of the Castilian chronicles recognize the loss of the standard by the Castilians , they are contradictory . One of the chroniclers ( Bernaldez ) even wrote that the Portuguese ensign was killed , whereas he was captured and later returned to Portugal . At 1922 several academics among them Félix de Llanos y Torriglia studied the Portuguese standard hanged at the ( Toledo ’ s cathedral ) and concluded that the standard was probably Castilian and probably from the 14th century ( the Battle of Toro was fought during the 15th century ) . In 1945 , Orestes Ferrara also investigated the standard and concluded that it couldn ' t be the one carried by Afonso V at the Battle of Toro . There ' s additional evidence that the royal standard was indeed retaken by Gonçalo Pires Bandeira since the Portuguese chronicler Rui de Pina made a hard critic to the King himself . He accuses Afonso V of ingratitude towards a man who served him so well and retook the lost flag : the royal rent given to him was so miserable that he had to work in agriculture in order to survive ( the manual work as a stigma to the medieval mentality ) . This was certainly correct because other way it would be a gratuitous slander to the King Afonso V ( uncle of the monarch Manuel I to whom Rui de Pina wrote his chronicle ) of which his author wouldn ' t have anything to win . Besides , the Portuguese chronicles are corroborated by three Spanish chroniclers : Scholar Antonio de Nebrija ( Castilian ) : " “ The Lusitanian standard is captured , which was a valuable insignia , yet by the negligence of Pedro Velasco and Pedro Vaca , to whom it was entrusted , as " < nowiki > [ already ] < / nowiki > " mentioned , it is subsequently taken up by the enemy . ” " Chronicler ( Basque ) : " “ The king of Portugal ( . . . ) seeing lost , one first time , his Royal standard and captured the ensign , who was taken to Zamora and stripped of his weapons which . . . were exposed in the Chapel of the New Kings , Toledo ' s Church , ( . . . ) even though the standard , for negligence ( . . . ) was taken by the Portuguese . ” " Royal Cosmographer and Chronicler Pedro de Medina ( Castilian ) : " “ The Castilians invested the Portugal ’ s standard … and took it easily due to the cowardly and soft resistance from the ensign and its guards . The ensign was captured and later taken to Zamora … but the standard was not taken because … some Portuguese chevaliers regained it after fighting with bravery . ” " In medieval warfare , the royal standard was not a mere flag . Its loss was almost equivalent to losing the battle . The Battle of Toro in numbers . Time . The fight would have taken between more than an hour ( according to Damião de Góis ) and more than 3 hours ( Pulgar ) . The size of the armies . Both armies had a similar number of men : around 8 , 000 soldiers . According to , the only chronicler who gives total numbers , the Portuguese army had 8 , 500 men ( 3 , 500 horsemen plus 5 , 000 peons ) and the " Ferdinand ' s " army had 7 , 500 men ( 2 , 500 horsemen and 5 , 000 peons ) when it left Zamora . So , the Portuguese army had a light advantage of 1 , 000 horsemen . Bernaldez wrote that the Portuguese army who besieged Zamora had 8 , 500 men . The siege of this city started in the middle of February 1476 - fifteen days after the union of the reinforcements brought by the " Perfect Prince " with the royal army of Afonso V ( end of January 1476 ) - and continued until the day of the battle ( 1 March 1476 ) . Thus , 8 , 500 men is the total number for the combined Portuguese forces at the Battle of Toro because the Portuguese army who fought it was precisely the army who abandoned the Zamora ' s siege and withdrew to Toro , where it was reached by the former besieged Isabelist army . From this initial number of 8 , 500 men , it is necessary to discount the losses by desertion , disease and fight during the Zamora ' s siege , after 15 days of hard winter , putting the final figure in more than 8 , 000 Luso - castilians . From the Portuguese side , this number reflects the high desertion suffered by its initial army ( 14 , 000 footmen and 5 , 600 chevaliers – but many of them were used as garrison of strongholds and thus did not fight in the Battle of Toro ) due to the unpopularity of the war among them . Especially after the failure of Burgos as it is told by Rui de Pina : “ " ( … ) many Portuguese without the will of serving the King came back to the kingdom " < nowiki > [ Portugal ] < / nowiki > " . Apparently the Portuguese captains had good reasons to do it because while they were in Castile their undefended lands in Portugal were under fire and sacked by the enemy . Other reasons were the high losses by disease , especially fevers from the hot and also because the Luso - Castilian army included many Castilian contingents who easily and massively changed sides after the aborted expedition to Burgos and its consequent fall on 28 January 1476 . From all the great Castilian nobles who initially supported Juana , only the Archbishop of Toledo , Alfonso Carillo de Acuña was at the side of Afonso V on the day of the battle . After all , despite the reinforcement troops brought by Prince John , when the Battle of Toro was fought , the invader army had suffered the erosion of 10 months of permanency in enemy territory . Álvaro Lopes de Chaves , the most nationalist of the Portuguese chroniclers , wrote that the Castilian army had a small advantage of 700 to 800 chevaliers over the Portuguese army . Pulgar Corroborates the similar size of both armies : " " . . . there was little difference in the number of horsemen between both armies . " " The high numbers involving dozens of thousands of men on each army as it is mentioned in some modern records of the Battle of Toro not only do not have documentary support but are also in direct contradiction with the Historic record : the contemporaneous chronicler , being a Castilian and a partisan of the Catholic Monarchs , cannot therefore be accused of pulling down the numbers of the armies present at the battlefield to reduce the triumph of his King Ferdinand at Toro . Losses . The total number of losses ( dead and prisoners ) was probably similar in both armies ( but larger among the " Juanistas " ) and wouldn ' t have been higher than one thousand men among the Portuguese - Castilians and many hundreds for the " Isabelistas " . While Diego de Valera estimates 800 dead , mentions about 1 , 200 Portuguese dead ( that ' s the version high Portuguese losses and low Castilian losses ) . But the version of great Portuguese losses / great Castilian losses is much more credible , not only because it is the only one supported by the sources of both sides ( Pulgar and Á . Lopes de Chaves ) , but also because is contradicted by no less than five chroniclers who explicitly stated that the Castilian losses were high : Pulgar , , Garcia de Resende , A . Lopes Chaves and Damião de Góis . Pulgar states : " " ( . . . ) and many were killed in one side and on the other side ( . . . ) . " " Álvaro Lopes de Chaves , also an eyewitness of the campaign , adds : " " ( . . . ) and on the battle there were many dead , prisoners and wounded in one side and on the other side . " " The losses were relatively large comparing to the size of the armies in presence , but according to chronicler Juan de Mariana they were low in terms of absolute value for a battle with this political importance : " " The killing was small compared with the victory , and even the number of captives was not large " " . Besides the chronicles , there is still historical evidence pointing to low losses in the Battle of Toro : during the Lisbon courts of 1476 , the procurators of Évora called the attention of Prince John to the strong contingent given by the city to his father ' s army . That was natural because Évora was probably the second most populous Portuguese city of the 15th century . What is not expectable is that only 17 men from that contingent died in the Battle of Toro , as the same procurators proudly declared . This number only makes sense if we accept that the Portuguese fatalities in battle were low . The aftermath and consequences . From a military perspective the battle of Toro was inconclusive but politically the outcome was the same as it would have been if the battle was a military victory for the Catholic Monarchs , because all its fruits have fallen by their side . Isabella convoked courts at Madrigal where her daughter was proclaimed and sworn heiress of Castile ' s throne ( April 1476 ) . After the battle , Afonso V – who wanted to avoid the renovation of the truces between France and Aragon , which would expire in July 1476 – became convinced that Portugal wouldn ’ t be able to impose his niece ’ s rights to the Castile ' s throne without external aid . So he departed to France seeking for help . The combined resources of Castile and Aragon had a population five times bigger and an area five times larger than that of Portugal . Many nobles still loyal to Juana since the Burgos episode turned sides along the next months and years – like the Portocarrero and Pacheco - Girón families plus the hesitant Marquis of Cadiz – and the majority of the undecided cities and castles would bound to the Isabella ' s party specially the fortress of Zamora , Madrid and other places from the Central region of Castile . It was a very slow but irreversible process . However , the bulk of the Portuguese army stayed in Castile with Afonso V and Juana during more than 3 months after the Battle of Toro , until 13 June 1476 . Rui de Pina and Damião de Góis wrote that only a small fraction of the Portuguese troops returned to Portugal with the " Perfect Prince " – one month after the battle , first days of April 1476 ( Easter ) – to organize the resistance of the undefended Portuguese frontier from the continuous Castilian attacks . According to Juan de Mariana they were only 400 horsemen . In spite of having been weakened by the countless defections from the " Juanistas " to the " Isabelistas " , the Portuguese troops maintained a winning attitude especially in the district of Salamanca ( and later around Toro ) , conquering and burning many castles and villages . The Portuguese army even organized two large military expeditions to capture King Ferdinand and then Queen Isabella ( April 1476 ) . After the Battle of Toro Ferdinand ' s reinforced army did not attack the invading army , but with less risk besieged the " Juanista " strongholds ( successfully even at length thanks to a clever policy of forgiveness ) while negotiating with the rebel " hidalgos " . The Catholic Monarchs ' strategy proved to be right because time and resources were on their side : the terrible military pressure exercised over the Portuguese border lands ( which defensive forces were in Castile at the service of Afonso V ) together with the new front of the naval warfare ( Isabella decided to attack the Portuguese at the heart of their power – the sea and the gold of Guinea ) made inevitable the return of the Portuguese army to Portugal . Diplomatic solution at Alcáçovas . After the Battle of Toro the war continued , especially by sea ( the Portuguese reconquest of Ceuta besieged and taken by the Castilians with the exception of the inner fortress , the , and the decisive naval Battle of Guinea ) , but also in Castilian and Portuguese soil . In 1477 a force of 2 , 000 Castilian knights commanded by the master of Santiago , who invaded the Alentejo ( Portugal ) is near Mourão : more than 100 Castilian knights were captured and the others fled , according to the chroniclers Garcia de Resende and Damião de Góis . In 1479 , the same master of Santiago defeats at Albuera a force of 700 or 1 , 000 ( depending on the sources ) Portuguese and allied Castilians who had invaded Extremadura ( Castile ) to help the rebel cities of Medellin and Mérida . According to Alfonso de Palencia the Portuguese - Castilians had 85 knights killed and few prisoners , but the bulk of that force reached those two cities where they resisted to fierce sieges by Ferdinand ' s forces until the end of the conflict , and thus increasing the bargaining power of Portugal during the peace negotiations and keeping the war ’ s gravity centre inside Castile and out of doors . Except for those two cities on Extremadura and other conquered places ( Tui , Azagala and Ferrera ) , all the other strongholds occupied by the Portuguese in Castile ( Zamora , Toro and Cantalapiedra ) as well as those occupied by their allied castilians ( Castronuño , Sieteiglesias , Cubillas Villalonso , Portillo , Villaba ) surrendered . Nevertheless , all the strongholds occupied by the Castilians in Portugal ( , and ) were retaken by Prince John . The exit from this impasse was reached through negotiations : the naval victory on the war On the other side , months before the start of peace negotiations the Catholic Monarchs reached two great victories : The acknowledgement of Isabella as Queen of Castile by the French King ( treaty of Saint - Jean - de - Luz on 9 October 1478 ) , who broke this way the alliance with Afonso V , leaving Portugal isolated facing Castile and Aragon . The Pope Sixtus IV , changing his position , revoked the former bull authorizing Juana ' s marriage with her uncle Afonso V . This way , the legitimacy of Afonso V as King of Castile fell by its foundations . The final balance of the war became very similar to the one of the Battle of Toro , without a conclusive victory to none of the sides : Castilian victory on the land and a Portuguese victory on the seas . In the peace Treaty of Alcáçovas , everybody won : Isabella was recognized Castile ' s Queen ( in exchange for her acquittal to the Portuguese crown and the payment of a big war compensation to Portugal : 106 . 676 " dobles " of gold ) and Portugal won the exclusive domain of the navigation and commerce in all the Atlantic Ocean except for the Canary Islands ( in exchange for its eventual rights over those islands which remained to Castile ) . Portugal also reached the exclusive conquest right over the Kingdom of Fez ( Morocco ) . Only D . Juana , la " Beltraneja " or " the Excellent Lady " , has lost a lot as she saw her rights sacrificed to the Iberian states ' interests . Propaganda . As the Spanish academic Ana Isabel Carrasco Manchado summarized : " " The battle " < nowiki > [ of Toro ] < / nowiki > " was fierce and uncertain , and because of that both sides attributed themselves the victory . ( . . . ) . Both wanted to take advantage of the victory ' s propaganda . " " Both sides used it . However , Isabella demonstrated a superior political intelligence and clearly won the propaganda ' s war around the result of the battle of Toro : during a religious ceremony at the Toledo ' s cathedral ( 2 February 1477 ) , Isabella – who already had proclaimed herself Queen of Portugal – hung the military trophies taken from the Portuguese ( flags and the armour of the ensign ) at the tomb of her great grandfather Juan I , as a posthumous revenge for the terrible disaster of Aljubarrota . Since then the chroniclers of the Catholic Monarchs followed the official version that the Battle of Toro ( 1476 ) was a victory which represented a divine retribution for the battle of Aljubarrota ( 1385 ) : one of the chroniclers ( , in 1479 ) put it exactly as the title of his chronicle – " “ La Divina retribución sobre la caída de España en tiempo del noble rey Don Juan el Primero ” " ( " Divine retribution for the defeat of Spain during the time of the noble King D . John the first " ) . After the letter sent in 1475 by Pulgar ( whose chronicle seems to have been personally reviewed by Isabella ) to Afonso V ( Aljubarrota , where " “ ( . . . ) fell that crowd of Castilians ( . . . ) killed ” " ) the theme became recurrent . This is well exemplified by Palencia , who not only frequently mentions Aljubarrota but also refers to the expedition that was planned by the inner circle of Isabella to send a great Castilian force to penetrate deeply into Portugal in order to recover the Castilian royal standard taken by the Portuguese on the Battle of Aljubarrota one hundred years before . There were many volunteers – " hidalgos " and cities like Seville , Jerez , Carmona , Écija , Cordova , and Badajoz . All this because , according to Palencia , the flag symbolized the " " ( . . . ) eternal shame of our people " " from the Castilian defeat at Aljubarrota . This obsession with Aljubarrota clearly influenced the descriptions of the Battle of Toro in the Castilian chronicles . It is important to the modern historical critic of the Battle of Toro to differentiate the facts from the official propaganda of the 15th and 16th centuries and to confront these records with those of the enemy side : for example with the chapter " " from the chronicle " Life and deeds of King D . John II " of the Portuguese chronicler Garcia de Resende . Besides literature , architecture was also used for propaganda and was influenced by Aljubarrota . The Monastery of San Juan de los Reyes ( to celebrate the Battle of Toro ) was also a response to the Monastery of the Battle built by the Portuguese to commemorate Aljubarrota , and like the Portuguese one it was also conceived to be a royal pantheon . On the other side , the Portuguese chroniclers focused their attention on the victory of the " Perfect Prince " instead of the defeat of his King , Afonso V . And they also presented the Portuguese invasion of Castile as a just cause because it was made in the defence of the legitimate Queen against a " usurper " – Isabella . Besides the documents , there are other indicators equally important to indicate the result of the Battle of Toro , like what happened during the weeks immediately after the battle such as the attitude and behaviour of both armies , the duration of the invading army ' s time in the area , and even comparisons with other similar battles . The Battle of Toro as retribution to Aljubarrota . The Battle of Toro is frequently presented as a twin battle ( with opposite sign ) of the Battle of Aljubarrota . Politically the comparison is legitimate : both of them were Royal Battles which decided the fate of some Peninsular Kingdoms in a way that would prove to be favourable to the nationalist party . But on military terms the difference is large Besides Afonso V ' s defeat , Pulgar reports that a part of the Portuguese army ( his left side led by the " Perfect Prince " ) defeated during the Battle of Toro a part of the " Isabelista " army : its right side , and he gives a justification for that . That ’ s corroborated by all the four Portuguese chroniclers and also by Zurita and Mariana , who respectively added that after that the Prince ’ s forces remained " " always in good order ” " and " “ without suffering defeat ” " during the whole battle . The Portuguese - Castilians became masters of the battlefield according to all the Portuguese chroniclers and also to Pulgar , and Mariana who revealed that " " the Portuguese sustained their positions during more time " " . Both Kings Ferdinand and Afonso left the battlefield of Toro ( to Zamora and Castronuño respectively ) in the night of the battle according to all chroniclers of both sides and the Portuguese recovered its lost royal standard . At the Battle of Aljubarrota all the parts of the Franco - Castilian army were defeated : vanguard , royal battle and right wing . At the end of the battle , the only Castilian soldiers present at the battlefield were dead or imprisoned , and the Portuguese King plus his army remained there for 3 days . The Castilian royal standard was taken to Lisbon and 12 hours after the battle Juan I left Portuguese soil taking refuge in his mighty armada which was besieging Lisbon ( 3 days later he sailed towards Castile ) - while his entire army fled to Castile in the hours immediately after the battle . The Portuguese army invaded Castile and defeated a large Castilian army in the Battle of Valverde ( mid October 1385 ) . After the Battle of Toro , the Afonso ’ s V army stayed in Castile 3 months where it launched several offensives especially in the Salamanca ' s district and later around Toro . For that he was criticized by chronicler Damião de Góis : " < nowiki > [ Afonso V ] < / nowiki > " never stopped to make raids and horse attacks along the land , acting more like a frontier ’ s captain than like a King as it was convenient to his royal person . " " Shortly after the Battle of Toro ( April 1476 ) , the Portuguese army organized two large military operations to capture first King Ferdinand himself ( during the siege to Cantalapiedra ) and then Queen Isabella ( among Madrigal and Medina del Campo ) . As noted by historian L . Miguel Duarte , this was not the behaviour of a defeated army . On the other side , the Castilian army during those 3 months after the Battle of Toro , in spite of its numerical advantage – with the massive transferences from the " Juanistas " to the " Isabelistas " plus the departure of some troops back to Portugal with Prince John – and despite of being impelled in his own territory , it neither offered a second battle nor attacked the invading army . This behaviour and attitude is an elucidative indicator of the outcome of the Battle of Toro . There is also a number gap . In the Battle of Toro the proportion of both armies was practically 1 : 1 , according to ( 7 , 500 " Juanistas " to 8 , 500 " Isabelistas " ) , Álvaro L Chaves and Pulgar , whereas at Aljubarrota that proportion was 5 : 1 according to Fernão Lopes ( 31 , 000 Franco - Castilians to 6 , 500 Anglo - Portuguese ) or " " at least 4 : 1 " " according to Jean Froissart . Elucidative is the attitude of the Castilian chronicler Pero López de Ayala , who besides being a military expert and a royal counsellor , participated on the Battle of Aljubarrota : he described minuciously the disposition and the numbers of the Anglo - Portuguese army but understandably he didn ' t say a word about the soldiers ’ number of his own army . In the Battle of Toro the casualties ( dead and prisoners ) were similar in both armies according to Pulgar and Álvaro L . Chaves and were low to J . Mariana . According to Diego de Valera the Portuguese suffered 800 dead while , who doesn ’ t quantify the Castilian losses , gives a total of 1 , 200 dead to the Portuguese . At Aljubarrota , Fernão Lopes reveals that the Castilians lost 2 , 500 men at arms Plus a " “ huge crowd ” " of “ " little people " ” , men without a ( noble ) name ( foot men , javelin throwers , jennets ) and in the subsequent 24 hours the fugitives suffered a terrible bloodbath in the neighbouring villages at the hands of the local . The so - called " monk of Westminster " , who wrote near 1390 possibly recording the testimony of English participants , puts the total losses ( common people and men at arms ) in more than 7 , 500 dead . ( to Froissart they were 7 to 8 thousand dead ) . As for the prisoners , Ximenes de Sandoval , the great Aljubarrota Spanish expert , estimated in his classic work the grand total for the Franco - Castilian losses : 10 , 000 men : 3 , 000 dead on the battlefield plus 3 , 000 dead on the near villages and 4 , 000 prisoners . Only losses of this magnitude could justify the national mourning decreed by Juan I – which lasted two years – and also the prohibition to participate in any public and private feast during that time : " " Nowadays , our kingdom has suffered such great loss of so many and so important chevaliers like those who died on the present war " < nowiki > [ with Portugal ] < / nowiki > " and also because in this time came such great dishonour and ruin to everyone of our kingdom that it is great the pain and shame residing in our heart . " " ( Juan I at the Valladolid courts – 1385 , December ) . Ten days after the Battle of Toro , a few Portuguese deserters were imprisoned when they tried to reach Portugal through Sayago , on the frontier , and some of them were killed or castrated . Desertion among the Portuguese was very high before the Battle of Toro , especially after the Burgos episode , and after this battle the number increased : " " And many of the Portuguese that left the battle returned to Portugal whether on foot or by horse . " " , wrote Pulgar . When some Portuguese proposed to buy a free transit document ( one silver royal for each man ) to avoid fighting , the Cardinal Mendoza counselled Ferdinand to send an order to spare any prisoner and to not offer resistance to those Portuguese who tried to cross the frontier because other way they will have no alternative except to fight and thereby prolonging the war and destruction inside Castile : " " when this was known to the King , it was debated in his council if they should permit the returning of the Portuguese to Portugal in security . Some chevaliers and other men from the King ' s army whose sons and brothers and relatives were killed and wounded on the battle ( . . . ) worked to provoke the King ( . . . ) . And brought into the King ' s memory the injuries and the cruel deaths inflicted by the Portuguese to the Castilians in the battle of Aljubarrota ( . . . ) . The cardinal of Spain said : ( . . . ) Pero Gonzalez de Mendoza my great grandfather , lord of Aleva , was killed on that so called battle of Aljubarrota ( . . . ) and in the same way perished some of my relatives and many of Castile ' s important personalities . ( . . . ) do not think in revenge ( . . . ) . It is sure that if the passage was made impossible for those " < nowiki > [ Portuguese ] < / nowiki > " who go , they will be forced to stay in your kingdoms , making war and bad things ( . . . ) . After hearing the cardinal ' s reasons , the King sent an order to not preclude the passage of the Portuguese , and to not cause them harm in any way . " " ( Pulgar ) . It was a variant of the principle attributed to Sun Tzu : " " when enemy soldiers leave your country cover them with gold " " , except that in this case it was the enemy soldiers who left silver in Castilian territory in exchange for their free transit . This situation of the Portuguese deserters trying to cross the frontier by their own risk , several days after the Battle of Toro , is not comparable to the bloodbath suffered by the Castilian fugitives at the hands of the population in the 24 hours after the Battle of Aljubarrota . After all , those Portuguese deserters had some capability to make war and antagonize the Castilians who might try to capture them ( as was recognized by the Cardinal Mendoza ) , whereas near the Aljubarrota battlefield the Castilian soldiers ’ thought was to survive the carnage . Their bargaining power and silver were useless . In the Portuguese historiography and imaginary , the Battle of Toro wasn ’ t considered a defeat but an inconclusive engagement or even a victory - and not just exclusively in Portugal , especially for those of the 15th to the 18th centuries . In Castile the Battle of Aljubarrota was considered a national tragedy : the Castilian chronicler Álvaro Garcia de Santa María reports that during the peace negotiations at 1431 ( as late as nearly half a century after Aljubarrota ) the members of the Castilian royal council didn ' t want to sign the peace treaty and offered a hard resistance because many of them " " have lost their grandfathers , or fathers or uncles or relatives in the battle of Aljubarrota and wanted to avenge the great loss they had suffered on that occasion " " " Revenge " would finally come two centuries after Aljubarrota at the Battle of Alcântara ( 1580 ) when a Spanish army defeated the Portuguese supporters of António , Prior of Crato and incorporated Portugal into the Iberian Union . The Battle of Toro and modern Spain . The great political genius of the Catholic Monarchs was to have been capable of transforming one inconclusive battle into a great moral , political and strategic victory , which would not only assure them the crown but also create the foundations of the Spanish nation . The academic Rafael Dominguez Casas : " “ . . . San Juan de los Reyes resulted from the royal will to build a monastery to commemorate the victory in a battle with an uncertain outcome but decisive , the one fought in Toro in 1476 , which consolidated the union of the two most important Peninsular Kingdoms . ” " Soon came the Granada conquest , the discovery and colonization of the New World , the Spanish hegemony in Europe , and at last the " Siglo de Oro " ( the Gold Century ) whose zenith was reached with the incorporation of Portugal and its fabulous empire into the Iberian Union , creating a web of territories " where the sun never sets " . Nowadays , the relationship between Spain and Portugal is excellent and battles like the one of Toro seem part of a remote past : some Portuguese and Spanish commonly refer to each other by the designation of " " nuestros hermanos " " , which means “ our brothers ” in Spanish . References . Articles Books Chronicles