The Corrientes campaign or the Paraguayan invasion of Corrientes was the second campaign of the Paraguayan War. Paraguayan forces occupied the Argentinian city of Corrientes and other towns in Corrientes Province. The campaign occurred at the same time as the Siege of Uruguaiana.
In the early 1860s, liberal parties took power during civil wars in Argentina and Uruguay. In Argentina, General Bartolomé Mitre assumed the presidency in 1862.[4] Mitre and Uruguayan General Venacio Flores were allied with the Empire of Brazil, and Flores launched a rebellion to take power with Brazilian and Argentinian support.
Faced with the advance of liberal forces backed by the empire, the conservative Paraguayan government of Marshal Francisco Solano López anticipated that Brazil and Argentina would try to incite a civil war in Paraguay. Solano Lopez, on the other hand, wanted to influence the other countries in the Río de la Plata basin.
The Brazilian- and Argentinian-backed invasion of Uruguay by Flores motivated López to demand the withdrawal of foreign forces from Uruguay at the Uruguayan government's request. The Paraguayan invasion of Mato Grosso was a success, but the Partido Blanco government in Uruguay was defeated and General Flores assumed the presidency.
López asked Argentinian president Bartolomé Mitre to allow his troops to cross Corrientes Province towards the Uruguay River to restart the civil war in Uruguay and attack the Brazilian province of Rio Grande do Sul. López told Mitre that Argentina was neutral in the conflict between Paraguay and Brazil (as it had been in the Uruguayan Civil War) and, since he had allowed Uruguayan rebel troops and the Brazilian navy to cross Argentine territory and jurisdictional waters, López could expect the same authorization for Paraguayan troops going to Brazil or Uruguay. Mitre refused, saying that he could not allow the passage of troops through his territory and remain neutral.
Plans
Map of the Paraguayan army's 1865 march south along the Paraná and Uruguay Rivers and the allied counterattack
Paraguay invaded and occupied Mato Grosso, although Brazil had claimed some of that territory. Paraguay had little or no communication with the rest of Brazil, so Paraguayan troops could not further advance into Brazil to force it to surrender or negotiate. For results in Uruguay or to prevent further attacks on Paraguayan territory, it had to continue the war in the province of Rio Grande do Sul.
Before Mitre's refusal, López had planned to concentrate his forces along the Uruguay River to attack Brazil or enter Uruguayan territory. When war was declared on Argentina, however, he needed to prevent the Argentine Army from hindering the Paraguayan advance with a diversionary maneuver along the Uruguay River. The objective was to occupy the city of Corrientes, a strategy that would also make it possible to control the upper Paraná River, leaving communications open through Corrientes Province.
Between the decision to invade and the troop advance, López decided to use troops occupying the capital of the invaded province to support the passage on the Uruguay River. Instead of concentrating most of the troops in this last column, he formed an army of only about 12,000 men and sent 25,000 soldiers to the Paraná River.
Before implementing his plan, López sent Lieutenant Cipriano Ayala to deliver the declaration of war to Buenos Aires. War was declared on 18 March 1865, and was published in Asunción a week later. The attack would be launched after the expected delivery date of the declaration of war but before the news arrived back in Paraguayan territory to give the disorganized, under-equipped Argentine army no time to react. The messenger carrying the declaration of war met with many obstacles, however, and the Argentine public learned about the invasion of Corrientes before it heard about the declaration of war.
Occupation of Corrientes
Present-day Corrientes
At dawn on 13 April 1865, a squadron of five Paraguayan steamboats appeared at the city of Corrientes with a landing party of 2,500 under the command of Commander Pedro Ignacio Meza. They passed the city headed south, then turned north and attacked the Gualeguay and the 25 de Mayo (Argentine steamers in port for repairs); the 25 de Mayo had a crew of 80 men. The crews of two Paraguayan ships boarded the Argentine ships, and captured them after a skirmish with some casualties. About 3,500 to 4,000 men landed and occupied the city the following day.
After the attack, residents led by Desiderio Sosa[es] constructed a defense on the roofs of houses closest to the port. The attacking fleet withdrew, and an attempt was made to organize battalions under Colonel Solano González; volunteers were summoned to the Plaza 25 de Mayo and the Plaza del Mercado.[5]
Paraguayan general Wenceslao Robles had settled in Paso de la Patria[es] with more than three thousand men, awaiting the Paraguayan fleet after it attacked Corrientes. Robles loaded as many soldiers as he could; the small Paraguayan squadron returned to Corrientes at dawn on 14 April, taking possession of the city square without any resistance. Shortly afterward, the column from Paso de la Patria arrived under Robles and the rest of the invading forces. The 25 de Mayo and Gualeguay did not return to Corrientes, since they had been incorporated into the Paraguayan Navy and sent to Asunción for repairs.[6]
The Argentine authorities withdrew with the few battalions, which could not resist the invading Paraguayan forces. Withdrawing to the interior was their only option to reorganize under Nicanor Cáceres, who harassed the invaders and kept the troops loyal to Governor Manuel Lagraña.[7]
Corrientes reacted in two different ways. Some residents fled to rural areas away from the city, to country houses in Lomas; others crossed the Paraná and took refuge in the interior of the Chaco Territory. The rest, a significant fraction of the population, did not resist the Paraguayan troops. A contemporary chronicler wrote that the city's inhabitants were not hostile to the invaders, which made it easier for them to receive good treatment (unlike the abusive treatment carried out in other occupied territories).[6]
Paraguayan control of the square was irreversible in principle, so Governor Lagraña, his closest collaborators, and security groups moved to rural areas to avoid being taken prisoner. Before he withdrew, Lagraña ruled that every citizen of Corrientes between sixteen and seventy years of age was required to enlist and fight the occupation forces.[6]
In the afternoon, a column of 800 cavalry arrived by land and entered the city. Robles met with a popular assembly apparently consisting of members of the Federalist Party and other opponents of the national government. A provisional government was formed by Teodoro Gauna, Víctor Silvero[es] and Sinforoso Cáceres. Local political action was carried out by Cáceres, but the triumvirate was limited to endorsing the activities of the Paraguayan commissioners José Berges, Miguel Haedo and Juan Bautista Urdapilleta in commercial matters and relations with Paraguay.
The Federalist Party leaders in the capital initially supported the Paraguayan occupation as allies in their attempt to recover the political dominance they had lost at the end of 1861 after the Battle of Pavón and the Corrientes revolution. Colonel Cayetano Virasoro stood out, although he was later accused of collaborating with the Paraguayans. The Paraguayan troops continued to receive reinforcements, reaching just over 25,000 men over the following days.
Lagraña assembled the province's population and summoned all males between 17 and 50 years of age to arms. He entrusted Colonel Desiderio Sosa with the military organization of the capital and its surroundings, and settled in the nearby town of San Roque. Lagraña gathered about 3,500 volunteers, many of whom had no military experience and very little equipment. He was joined a few weeks later by General Nicanor Cáceres, who arrived from the Curuzú Cuatiá area and contributed about 1,500 men (almost all veterans).
The presence on the governor's side of Cáceres, who (despite his ambiguous record) was considered to belong to the Federalist Party, cooled federal enthusiasm for the invaders and deprived them of provincial support. As the Paraguayan army began its advance south, Lagraña and his army had to withdraw to Goya.
In the early hours of 11 July 1865, Paraguayan soldiers kidnapped Toribia de los Santos, Jacoba Plaza, Plaza's son Manuel, Encarnación Atienza, Carmen Ferré Atienza and her daughter Carmen, Victoria Bar and wives of the Corrientes resistance leaders from their homes. The occupation of Corrientes was difficult for its inhabitants. In his essay La toma de Corrientes, Wenceslao Domínguez wrote:
The slightest suspicion was enough for summary trial if there was one, and the slightest reason for Argentine patriotism was punished with the death penalty. It would be long to detail the conditions of the gloomy outing in Corrientes; and besides, it is also quite well known.
In his book Historia ilustrada de la provincia de Corrientes, historian Antonio Emilio Castello wrote:
The city of Corrientes dragged out a miserable existence immersed in fear of accusations, abuses, and captivity in Paraguayan prisons. One day the invaders carried out a ferocious massacre of the Chaco Indians in the streets of Corrientes. The poor Indians had been selling firewood and grass for years, from house to house. As some of them refused to receive Paraguayan paper money, they were exterminated with sabers and bullets in broad daylight.
Argentine reaction
Brazilian reinforcements arriving at Corrientes via the Paraná River
The population of the big cities denounced the invasion, which they saw as unjustified and treacherous. President Mitre's speech, delivered the day that news of the attack arrived in Buenos Aires, included the later-reviled phrase "In 24 hours to the barracks, in fifteen days in Corrientes, in three months in Asunción!" and fueled the desire for revenge. Many young men rushed to enlist in regiments created for the war. The same thing happened in Rosario, and to a lesser extent in Córdoba and Santa Fe. The reaction in the rest of the country was very different; only the most determined supporters of the ruling party publicly opposed the Paraguayan attack.
Entre Ríos Province opposed the national government. Respecting his previous commitments, governor and former president Justo José de Urquiza assembled a provincial army of 8,000 men and moved it to the northern border of the province. When they reached Corrientes in July 1865, soldiers who had believed that they were going to fight on the Paraguayan side rose up in the Disbandment of Basualdo[es] and deserted en masse. The central government refrained from reprisals against the rebels. Urquiza recruited about 6,000 soldiers from the provincial forces who had a reputation as excellent cavalry troops, but they disbanded in the Disbandment of Toledo[es] in November 1865. This second rebellion was harshly repressed with the help of Brazilian and Uruguayan troops.[8]
On 1 May, the Treaty of the Triple Alliance was signed by Argentina, Uruguay, and Brazil. The speed with which an agreement was reached makes a number of historians suspect that the treaty had been prepared in advance.
Mitre gathered the available troops in Buenos Aires, Rosario, and San Nicolás de los Arroyos, and moved a strong division north aboard the war fleet. He ordered each provincial government to provide a large contingent of infantry forces to reinforce the enlisted troops. Most of the cavalry who served in the frontier forts with indigenous people in the south of the country were also sent north.
Paraguayan advance
General Wenceslao Paunero
In late April, the Paraguayan army slowly advanced south along the Paraná River and seized Bella Vista, Empedrado, Santa Lucía, and Goya. During the advance, the Corrientes forces engaged in guerrilla warfare and established ambush points on the roads. Battles at Caá Catí and Naranjito consolidated the route along the rivers, since the center and south of Corrientes Province remained under government control with a new capital in San Roque. In a battle on 10 May, Colonel Fermín Alsina led 800 men and was defeated by about 5,000 Paraguayans. In the Battle of Palmira nine days later, Colonel Manuel Vallejos realized that the Paraguayan troops could not confront an organized army. That battle and the Battle of Corrientes, led by General Wenceslao Paunero, were crucial to stopping the Paraguayan troops on the Paraná. San Roque, from which the governor of Corrientes exercised local power, prevented movement towards the center. The Imperial Brazilian Navy, in control of the Paraná River, prevented assistance by water.
Part of the Allied squadron arrived at Corrientes on 25 May, with 725 men led by Paunero. The four battalions were commanded by Juan Bautista Charlone, Ignacio Rivas, and Adolfo Orma[es]; Manuel Rosetti, with an artillery squad, was also part of the division.
Charlone's battalion attacked without waiting for reinforcements, interposing themselves between the fleet and the Paraguayan defenders and preventing the use of artillery. When the other battalions landed, the Argentines advanced towards the city in street-by-street fighting. The Paraguayans were defeated and expelled from the city, with about 400 dead; the Argentines had 62 dead and dozens wounded.
The Paraguayans, commanded by Major José del Rosario Martínez, withdrew towards Empedrado to reorganize and receive reinforcements; a large division was advancing from Paso de la Patria toward the capital. General Cáceres refused to advance in support of the Argentinians despite the insistence of General Manuel Hornos, who had joined his forces with cavalry. Although this decision made it difficult for Paunero's men to resist the expected counterattack, their presence in the south of the province prevented the Paraguayan division which had occupied Goya and Santa Lucía from advancing to support the Uruguay River.
Without prior warning or taking advantage of his military position, Paunero left with his troops at dawn on the 27th. At the request of Governor Lagraña and General Hornos, Paunero agreed to land in the south of the province at the town of Esquina.
The Paraguayan troops subjected the population to violent repression because they suspected them of aiding Paunero's troops. On 11 July, they took five wives of resistance leaders hostage and brought them to Paraguayan territory. Four returned in 1869 after harsh treatment, but Colonel Desiderio Sosa's wife died in Asunción.
Brazilian steamers ramming the Paraguayan Navy during the battle
A Brazilian squadron was stationed near the city of Corrientes, blocking the Paraguayan fleet from the Paraná. The squadron consisted of nine ships, almost all battleships, commanded by Francisco Manuel Barroso.
Marshal López organized a plan of attack on the Brazilian fleet which consisted of attacking and boarding the enemy fleet by surprise and bombarding fleeing ships from the shore. The Paraguayan squadron consisted of nine steamships. That fleet's only ironclad warship, commanded by Pedro Ignacio Meza, transported 500 infantrymen for the boarding maneuver. They also moved a large number of wooden barges, each with a cannon aboard. The Paraguayans passed the Argentine fleet, protected by darkness and an island, before going upriver and attacking with grapeshot, muskets, and sabers.
A battery commanded by Major José María Bruguez, hidden in the forests of ravines north of the mouth of the Riachuelo, was to bombard ships fleeing the ambush. To the south were 2,000 Paraguayan riflemen, also hidden in the woods at the top of the ravine.
The operation began during the night of 10–11 June. As they neared the objective, the boiler of one of the Paraguayan ships broke and Meza insisted on repairing it. When he decided to go ahead with only eight ships, it was morning and he had lost the element of surprise. Meza's fleet passed the Argentine squadron, and cannon fire was exchanged.
The battle on June 11
Meza reached the outskirts of the Riachuelo and docked in the ravine. The Brazilians closed in on him, but coastal artillery caused serious damage and stranded a Brazilian ship.
Barroso then rammed and sank three Paraguayan ships with his flagship, the frigate Amazonas, and Brazilian artillery disabled the wheels of two Paraguayan steamers. Three Brazilian ships sank several wooden barges, and most of the Paraguayan fleet was in ruins.
The Brazilian fleet did not take advantage of the victory; the next day, it set off downstream towards the outskirts of Emedrado after preventing communications between Paraguay and the Atlantic Ocean.[9] The Paraguayan defeat prevented its column on the Paraná River from aiding the one on the Uruguay River, and the victory at Riachuelo raised the morale of the Argentine troops.
Uruguay campaign
Ground operations of the Paraguayan forces (black) and allies (red)
While the city of Corrientes was occupied, a garrison of 12,000 men commanded by Lieutenant Colonel Antonio de la Cruz Estigarribia headed east of the province to attack Brazilian territory on the Uruguay River. President Mitre appointed General Urquiza, Governor of Entre Ríos, commander of the vanguard division with the mission of confronting the Uruguayan column. Estigarribia divided his troops and sent Major Pedro Duarte, at the head of a small advance column, to occupy the town of Santo Tomé on 5 May. Estigarribia entered Santo Tomé four days later and began crossing the Uruguay River at the head of about 6,500 troops, leaving the rest divided between the Santo Tomé garrison and Duarte's advance guard of just over 3,000 soldiers.
Estigarribia advanced south without resistance, occupying São Borja and Itaqui. A Paraguayan regiment was attacked and partially destroyed near São Borja in the Battle of Mbuty. Some Paraguayan forces remained as a garrison in São Borja, while Duarte headed south. Basualdo's disbandment occurred on 4 July when Urquiza's troops refused to fight against Paraguay, whom they considered their ally.
General Venancio Flores, president of Uruguay since his triumph over the Blanco Party, joined Urquiza at the head of 2,750 men. The 1,200-strong Brazilian force, under Lieutenant Colonel Joaquim Rodrigues Coelho Nelly, headed towards Concordia. Flores had 4,540 men, a force he considered insufficient to face the two Paraguayan columns.
Flores, Duarte and Estigarribia marched slowly to meet each other. Paunero's 3,600 men began an accelerated march through estuaries and rivers, rapidly crossing the south of the province of Entre Ríos, to join Flores. An additional 1,400 cavalry from Corrientes under General Juan Madariaga also marched there. Colonel Simeón Paiva, with 1,200 men, closely followed Duarte's column with orders not to attack.
Estigarribia rejected the opportunity to destroy his enemies one by one and disobeyed López's orders, which told him to continue to Alegrete.[10] He entered Uruguaiana on 5 August, reorganizing and supplying his forces without supporting Duarte. General David Canabarro's Brazilian forces, too few to attack Estigarribia's 5,000-man garrison, remained near the town without being attacked by the Paraguayan chief. On 2 August, Duarte occupied present-day Paso de los Libres.
Passage through the Paso de la Patria, Corrientes, of the first Argentine corps on 13 August 1865
With the numerical superiority of the allies, Duarte unsuccessfully asked Estigarribia for help.[11] On 13 August, without Duarte able to prevent allied attacks, Paunero and Paiva joined Flores' army with about 5,550 infantry, 5,000 cavalry, and 32 artillery pieces. Duarte had 1,980 infantry, 1,020 cavalry, and no artillery.
Duarte left Paso de los Libres and took up position in the ravines of the Yatay near the town. His defensive position was good, but retreat would be impossible in the event of defeat.[12]
The battle began at ten a.m. on 17 August with a hasty attack by Palleja's infantry division; Duarte took advantage of the error and counterattacked with almost all his cavalry, causing hundreds of casualties and forcing Palleja to fall back. The artillery fired only 50 shots before having to cease fire, because Palleja's retreating division had crossed the line of fire.[13]
Ignacio Segovia's cavalry division attacked the Paraguayan cavalry in a battle lasting over two hours. When the Allied infantry then overwhelmed the Paraguayan positions, the Paraguayans held out for another hour. Duarte attempted a cavalry charge, but his horse was killed and he was taken prisoner by Paunero. He later saved Duarte's life after Flores intended to have him executed.[14] Some infantry continued to resist north of the Yatay, but were defeated by Juan Madariaga's cavalry from Corrientes.
The Paraguayans had 1,500 dead and 1,600 taken prisoner. Only about a hundred men survived by swimming across the Uruguay and joining Estigarribia's forces. Among the prisoners, Flores found several dozen Uruguayan soldiers (supporters of the Blanco Party who had taken refuge in Paraguay) and federalist Argentines who did not recognize Mitre's national authority. Forgetting the help he had obtained from Brazil and Mitre's rebellion against the Argentine Confederation, Flores ordered their execution as traitors.[15] Many Paraguayan soldiers were forced to take up arms against their own country, replacing allied losses (particularly in the east).[16]
On 16 July, the Brazilian Army reached the border of Rio Grande do Sul and besieged the city of Uruguaiana. The troops received reinforcements, and sent Estigarribia at least three orders to surrender. On 11 September, Emperor Pedro II of Brazil arrived. Presidents Bartolomé Mitre and Venancio Flores were already present, as well as Brazilian military leaders such as the Marquis of Tamandaré and Lieutenant General Manuel Marques de Sousa. The allied armies had 17,346 combatants (12,393 were Brazilian, 3,802 Argentines, and 1,220 Uruguayans), and 54 guns. The surrender took place on 16 September when Estigarribia reached an agreement on the required conditions.
The emperor ordered his officers to place themselves under Mitre, who was appointed commander-in-chief of the allied armies. The head of the Paraguayan division of the allied army wrote to Estigarribia, rejecting his charge of treason and accusing López of betraying his country by oppressing his people. Estigarribia's reply indicated that not all of his officers agreed to fight to the death, as he had said.[17]
On 11 September, with authorization from the besieging forces, Estigarribia sent almost the entire civilian population to the allied camp. His motive was not solely humanitarian, since the civilian population consumed food.
After exchanges of cannonades and rifle shots, Mitre organized an assault on the square on 13 September. The besieged troops died from disease and desertions increased, encouraged by discussions between their leaders about whether they should resist until the end; this reduced the defenders to just over 5,500.
On 18 September, the Marques de Sousa issued an ultimatum that he would begin the assault in two hours. Estigarribia replied that he would hand over the plaza in exchange for the superior officers being allowed to retreat to anywhere, even Paraguay. The Paraguayan soldiers were taken prisoner. Many were killed during the operation, and many others (perhaps 800 to 1,000) were taken prisoner by Brazilian cavalry officers and sold into slavery.[18] Those who remained in the hands of Argentine and Uruguayan officers were forced to become a Paraguayan division of the Allied army or be incorporated into the infantry of those countries. There were 5,574 Paraguayan prisoners: 59 officers, 3,860 infantry, 1,390 cavalry, 115 artillery, and 150 auxiliaries.
Paraguayan withdrawal
Robles ordered his troops to abandon the towns in the south of the province in mid-June, concentrating his forces in the provincial capital. He kept some towns within a 150-kilometre (93mi) radius of the capital for a time, and cavalry roamed the center of the province.
On 12 August, the Brazilian fleet retreated further south towards Goya. A battery on the coast at Paso de Cuevas, near Bella Vista, bombarded the squadron as it passed. The Brazilian ships were not heavily damaged in the Battle of Paso de Cuevas, although they had 21 dead and 38 wounded (nearly all sailors). The only ship of the Argentine Navy, the Guardia Nacional (commanded by Luis Py, with navy commander José Murature aboard) stopped in front of the battery and engaged in an artillery duel. The ship was damaged, with three dead and 12 wounded. Two of the three soldiers killed by artillery were young officers: one was a son of Captain Py, and the other a son of former Governor Pedro Ferré of Corrientes.
Allied commanders attempted to negotiate with Robles and induce him to change sides. As a result, President López ordered his replacement with General Francisco Isidoro Resquín. At the beginning of the following year, Robles was subjected to a summary trial and executed for his alleged betrayal.
The Paraguayan occupation of Corrientes was now useless, since the Argentine army (reinforced by large Brazilian and Uruguayan contingents) advanced towards the north. Many Paraguayan troops were withdrawn towards Paraguayan territory in anticipation of an allied invasion.
At the end of June and again at the end of July, General Hornos' troops defeated cavalry groups (identified as Argentine, most from Corrientes and the Federalist Party) in the province's central marshes. On 21 September, Hornos defeated a division of 810 from Corrientes commanded by the Lobera brothers from Naranjitos.[19]
An allied detachment commanded by General Gregorio Castro advanced along the coast of Uruguay. Passing La Cruz, the vanguard (commanded by Colonel Fernández Reguera) discovered a Paraguayan division with three artillery batteries leading a herd of 30,000 cattle from Corrientes to their country. Reguera defeated the Paraguayans and advanced to Candelaria, liberating Alto Paraná.[19]
On 3 October, López ordered Resquín to have the Southern Division evacuate Argentine territory through the Paso de la Patria. When the clash between the Argentine forces was imminent on 22 October, Resquín evacuated Corrientes by river and land. He withdrew from San Cosimo, the last occupied town, a few days later.
The withdrawal of the Paraguayan forces was accompanied by looting. The ranches on the Paraná coast were looted, and some were burned.[20] Goya was severely looted, with several steamers bringing plunder to Asunción. National and provincial public offices were destroyed, their files stolen, and the church was damaged. Farms with no livestock were abandoned by their owners. The Federalist José F. Cáceres persecuted families who had taken refuge in the Chaco.[20] General Nicanor Cáceres reported in August that "the towns of San Roque and Bella Vista that the invaders have occupied for more than two months (...) as well as all the fields through which they have crossed are spoils capable of encouraging the most indifferent".[19]
The provincial capital was occupied by Nicanor Cáceres' troops on October 28, and the provincial government was reinstalled on November 3. That day, Resquín's 27,000 men completed the passage of the Paraná River to their own country without being hampered by the Brazilians. They took 100,000 cattle from Corrientes, but most died near Itapirú from a lack of adequate pasture.[21]
On 25 December, Evaristo López was elected governor by a legislature composed primarily of Federal Party members. The Federalist victory was due to Cáceres' control of most of the provincial territory; López was his friend and partner. Many collaborators with the Paraguayan invasion who had been arrested and risked execution for treason were released by Corrientes' Federalist government, and others fled to Paraguay.[22] Several, including two members of the triumvirate, were executed years later at the order of Francisco Solano López.
At the end of the year, the allied army in the Ensenadas (or Ensenaditas) camp a few kilometers north of Corrientes–near present-day Paso de la Patria–reached 50,000 men. The Brazilian fleet took up positions upstream of the confluence of the Paraná and Paraguay Rivers.
The Brazilian 19th Brigade, commanded by Colonel Villagran Cabrita, repelled the Paraguayan assault.
After the withdrawal of the Paraguayan army, the defense of Paraguay focused on two positions. On one side, Fort Itapirú[pt] was on the right bank of the Paraná River, defended by a large number of cannons. On the other side, upstream on the Paraguay River, the fortresses of Curuzú[es], Curupayty[es] and Humaitá prevented the advance of allied fleets and land armies up the river.
Allied troops concentrated from December to early April of the following year in the Ensenada camp, north of Corrientes. Nearly all the contingents sent from the provinces of the Argentine interior objected to being sent to war. The 6,000-strong Entre Rios division of 6,000 men mutinied on 6 November; Entre Ríos Province was garrisoned by only 400 men who could not desert without horses and whom Urquiza had to threaten with execution to force them to serve.[10]
Paraguayan troops continuously attacked the coast of Corrientes. They crossed the Paraná River in boats or canoes, with the Brazilians unable to prevent it. Cavalry corps from Cáceres' or Hornos' divisions, encamped northeast of Ensenaditas, usually came out to confront them.
Mitre decided to punish the Paraguayans on 30 January and sent the Buenos Aires division, with almost 1,600 men commanded by General Emilio Conesa, to meet them. Almost all were gauchos from Buenos Aires Province, better suited to cavalry than infantry.
The landing party had about 200 men; on the Paraguayan side were almost 1,000 more soldiers who had to cross the following day. They advanced a few kilometers to the Arroyo Pehuajó, where General Conesa was waiting in ambush; before the attack he addressed his troops, who burst into loud cheers (betraying their presence to the Paraguayans).
Paraguayan Lieutenant Celestino Prieto began to retreat, which Conesa tried to prevent with a charge. The Paraguayans barricaded themselves in woods behind the stream and took up a defensive position, from which they fired on the defenseless Argentine soldiers. They received around 900 reinforcements, causing almost 900 Argentine casualties and losing 170 Paraguayans. General Mitre, who could hear the volleys from his camp, ordered Conesa's troops to withdraw at the end of the day. At nightfall, the Paraguayans withdrew.
The last battle before the invasion of Paraguay occurred on 10 April on the island in front of Fort Itapirú, when a Brazilian division took up a position to bombard the fort. The Paraguayans unsuccessfully tried to remove them with infantry.[23]
Aftermath
Landing of allied soldiers in Paraguay
Allied forces captured Fort Itapirú[es] on 5 April 1866 and began the Humaitá campaign, the war's third phase. The northern front was nearly abandoned and the northeast region was occupied by Brazil, since the Paraguayan troops had to concentrate on the south.
Estigarribia's army was lost; Robles's army returned with 14,000 healthy, exhausted soldiers and 5,000 sick. According to George Thompson, by the end of 1865 the Paraguayans had lost 52,000 men (30,000 on other fronts or due to illness) and 10,000 were sick. The Paraguayan army tripled from its original 20,000 troops in 1864 thanks to levies, installing 10,000 in Humaitá against Argentina and 15,000 in Villa Encarnación against Brazil.[24]
Francisco Solano López Carrillo was a Paraguayan military officer, politician and statesman who served as President of Paraguay between 1862 and 1870, of which he served mostly during the Paraguayan War (1864–1870). He succeeded his father Carlos Antonio López as the second president of Paraguay. Solano López is the only Paraguayan ruler to have been killed in action. He is one of only two Paraguayans to have received the rank of Marshal, along with José Félix Estigarribia.
The Paraguayan War, also known as the War of the Triple Alliance, was a South American war that lasted from 1864 to 1870. It was fought between Paraguay and the Triple Alliance of Argentina, the Empire of Brazil, and Uruguay. It was the deadliest and bloodiest inter-state war in Latin American history. Paraguay sustained large casualties, but the approximate numbers are disputed. Paraguay was forced to cede disputed territory to Argentina and Brazil. The war began in late 1864, as a result of a conflict between Paraguay and Brazil caused by the Uruguayan War. Argentina and Uruguay entered the war against Paraguay in 1865, and it then became known as the "War of the Triple Alliance."
The Battle of Curupayty was a key battle in the Paraguayan War. On the morning on 22 September 1866, the joint force of Brazilian, Argentine, and Uruguayan armies attacked Paraguayan fortified trenches on Curupayty. The Paraguayans were led by general José Eduvigis Díaz. This position was held by 5,000 men and 49 cannons, some of them in hidden places out of the attackers view. The Imperial Brazilian Navy gave support to the 20,000 assailants, but the ships had to keep some distance from the guns at the fortress of Humaitá, which led to the lack of accuracy and impact of the ship's fire. The navy's failure was crucial at the later ground battle result.
The Battle of Tuyutí was a Paraguayan offensive in the Paraguayan War targeting the Triple Alliance encampment of Tuyutí. It is considered to be the bloodiest battle ever in South America. The result of the battle was an Allied victory, which added to the Paraguayan troubles after the loss of its fleet in the Battle of Riachuelo.
The Treaty of the Triple Alliance was a treaty that allied the Empire of Brazil, Argentina, and Uruguay against Paraguay. Signed in 1865, after the outbreak of the Paraguayan War, its articles prescribed the allies' actions both during and after the war. The war led to the near-annihilation of Paraguay.
In the Paraguayan War, the Battle of Yatay was fought on August 17, 1865, between the troops of the Triple Alliance and the soldiers of Paraguay near Paso de los Libres, Corrientes, Argentina.
The military history of Brazil comprises centuries of armed actions in the territory encompassing modern Brazil, and the role of the Brazilian Armed Forces in conflicts and peacekeeping worldwide. For several hundreds of years, the area was the site of intertribal wars of indigenous peoples. Beginning in the 16th century, the arrival of Portuguese explorers led to conflicts with the indigenous peoples; a notable example being the revolt of the Tamoio Confederation. Sporadic revolts of African slaves also marked the colonial period, with a notable rebellion led by Zumbi dos Palmares. Conflicts were fought with other European nations as well – two notable examples being the France Antarctique affair, and a conflict with the Netherlands in the early 17th century over control of much of Northeastern Brazil. Although Portugal retained its possessions during conflicts with other nations, it lost control of the colony after the Brazilian war of Independence, which led to the establishment of the Empire of Brazil.
The Battle of Estero Bellaco was one of the bloodiest battles of the Paraguayan War. The battle was fought on 2 May 1866 with the Paraguayan Army suffering 2,000 casualties among the dead and wounded. Likewise, 300 of their men were taken prisoner by the troops belonging to the Triple Alliance: Argentina, Brazil and Uruguay. The allies lost nearly 2,000 men, mostly wounded, and the Uruguayan troops of General Venancio Flores - commanded by León de Pallejas - were severely decimated, accounting for the vast majority of allied deaths.
Ricardo Ramón López Jordán (1822–1889) was an Argentine soldier and politician, one of the last influential "caudillos" in the history of Argentina. He thrice rebelled against the government of Buenos Aires and was defeated in each attempt.
The Platine War was fought between the Argentine Confederation and an alliance consisting of the Empire of Brazil, Uruguay, and the Argentine provinces of Entre Ríos and Corrientes, with the participation of the Republic of Paraguay as Brazil's co-belligerent and ally. The war was part of a decades-long dispute between Argentina and Brazil for influence over Uruguay and Paraguay, and hegemony over the Platine region. The conflict took place in Uruguay and northeastern Argentina, and on the Río de la Plata. Uruguay's internal troubles, including the longrunning Uruguayan Civil War, were heavily influential factors leading to the Platine War.
The siege of Humaitá was a military operation in which the Triple Alliance flanked, besieged and captured the Fortress of Humaitá, a Paraguayan stronghold that was referred to as the Gibraltar of South America. It fell on 26 July 1868. It can be considered the key event of the Paraguayan War since the fortress had frustrated the allied advance into Paraguay for more than two years. However it did not surrender as the defenders escaped, most of them to fight another day.
The siege of Uruguaiana was an engagement in the Paraguayan War that began in late August 1865, and ended on 18 September that year when the Paraguayans were forced to surrender due to low food supplies. Paraguayan forces surrendered in spite of President López's order to the Paraguayan commander, Colonel Estigarribia, not to do so. After the allied victory at Uruguaiana, Lopéz withdrew his army from Argentina and Brazil.
The Battle of Pehuajó, also known as Battle of Corrales or Battle of Itati was fought during the Paraguayan War on 31 January 1866.
The Battle of Corrientes occurred at the beginning of the Paraguayan War during the second stage of the Paraguayan offensive, after the invasion of Mato Grosso at the beginning of 1865.
Antonio de la Cruz Estigarribia was a Paraguayan Lieutenant colonel who was notable for his service in the Paraguayan War. He served as one of the main Paraguayan commanders during the Invasion of Rio Grande do Sul, organizing the Battle of São Borja and the Siege of Uruguaiana before his surrender.
Manuel Ignacio Lagraña was an Argentine politician and military figure. He was the 21st and 23rd Governor of Corrientes Province and the governor of the province when the Paraguayans invaded the province during the Corrientes campaign of the Paraguayan War.
Manuel Hornos (1807-1871) was an Argentine general who participated throughout the Argentine Civil Wars and the Paraguayan War. He was known for his service at the Battle of Tuyutí where he was a major contributor to the Argentine victory at the battle.
The Humaitá campaign or the Cuadrilátero campaign was the third, longest and deadliest campaign of the Paraguayan War. The campaign lasted from 16 April 1866 to 5 August 1868. After the initial Paraguayan success in the Mato Grosso campaign and its failure in the Corrientes campaign, the armed forces of the Triple Alliance, Argentina, the Empire of Brazil and Uruguay, invaded the south of Paraguay. At a very short distance, they found the Paraguayan defensive device made up of four fortifications, the so-called "Cuadrilátero", which obstructed the passage to Asunción both by land and by the Paraguay River. A long series of battles cost huge numbers of casualties on both sides, with operations coming to a complete halt after the allied defeat at the Battle of Curupayty. Casualties on both sides were even higher from disease than from battle due to a cholera epidemic which was added to the appalling food and sanitary conditions.
The Invasion of Rio Grande do Sul began on June 10, 1865 when about 7,500 soldiers under the command of General Antonio de la Cruz Estigarribia invaded the village of São Borja near Brazil's border with Argentina. About 3,000 men commanded by major Pedro Duarte stayed on the other side of the Uruguay River to accompany the advance of the main column. The Paraguayans always advanced along the river without major damage, with the exception of a confrontation on the Butuí River where a Paraguayan battalion had been defeated, until they reached Uruguaiana, where a two-month siege made them surrender unconditionally on September 18. The main objective of Paraguayan president Francisco Solano López to invade Rio Grande do Sul was to force a peace treaty favorable to the Paraguayans with the Empire of Brazil. The action took place in the second phase of the Paraguayan War, known as the Corrientes campaign.
Pedro Duarte was a Paraguayan general and politician of the Paraguayan War. He was known for his service during the Corrientes campaign and was one of the few Paraguayan military leaders to survive the conflict.
References
1 2 Suárez, Martín (1974). Atlas histórico-militar argentino. Buenos Aires: Círculo Militar, p. 277. Cifras de abril de 1865.
↑ Ramírez Braschi, Dardo. Saqueos en la provincia de Corrientes durante la guerra del Paraguay. Temas Americanistas, No. 32, 2014, p. 247-278.
1 2 3 Ramírez Braschi, Dardo. Saqueos en la provincia de Corrientes durante la guerra del Paraguay (Looting in the province of Corrientes during the Paraguayan war). Temas Americanistas (Americanist Themes), Number 32, 2014, pp. 247-278.
↑ Ramírez Braschi, Dardo. Saqueos en la provincia de Corrientes durante la guerra del Paraguay. Temas Americanistas, Numero 32, 2014, pp. 247-278.
↑ Para toda esta sección, véase Tissera, Ramón, Riachuelo, la batalla que cerró a Solano López la ruta al océano, Revista Todo es Historia, número 46, Bs. As., 1971.
1 2 Rosa, José María, La guerra del Paraguay y las montoneras argentinas, Ed. Hyspamérica, 1986. ISBN950-614-362-5
↑ José Ignacio Garmendia (1904). Peuser, Bs. As (ed.). Campaña de Corrientes y Río Grande. p.276.
Castello, Antonio Emilio, Historia de Corrientes, Ed. Plus Ultra, Bs. As., 1991. ISBN950-21-0619-9.
Corrêa Martins, Francisco José (2014). "El empleo de los mitaí y mitá en el ejército paraguayo durante la Guerra de la Triple Alianza (1864-1870)". En Juan Manuel Casal & Thomas L. Whigham. Paraguay: Investigaciones de historia social y política: Actas de las III Jornadas Internacionales de Historia del Paraguay en la Universidad de Montevideo. Asunción: Editorial Tiempo de Historia & Universidad de Montevideo, pp.181–192. ISBN9789996760990.
Giorgio, Dante A., Yatay, la primera sangre, Revista Todo es Historia, Nro. 445, Bs. As., 2004.
Tissera, Ramón, Riachuelo, la batalla que cerró a Solano López la ruta al océano, Revista Todo es Historia, número 46, Bs. As., 1971.
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Paraguay 
35,700 infantry, 17 warships, 103 cannons
8,400 infantry
4 infantry regiments [1] 
60,000 infantry [1] [2] 
