The war between Huáscar and Atahualpa

The civil war between Huáscar and Atahualpa (c. 1527–1532) was the most consequential conflict in the history of the pre-Columbian Andes. Fought between two sons of the Sapa Inca Huayna Capac in the years immediately before the Spanish arrival, it traversed the entire length of the Inca Empire, killed perhaps a hundred thousand people, and left the empire so weakened that a Spanish force of about 168 men under Francisco Pizarro was able to capture the reigning emperor, Atahualpa, in a single afternoon at the Battle of Cajamarca in November 1532. The civil war is the hinge of late Inca history: everything that followed — the collapse of imperial rule, the long resistance of the Neo-Inca State of Vilcabamba, the loss of the empire — was a consequence of it.

The principal sources for the war are the chronicles of Pedro Cieza de León, Juan de Betanzos, Pedro Sarmiento de Gamboa, and Miguel Cabello de Balboa, all of whom drew on the testimony of Inca and Spanish witnesses. The chronicles differ on some details, but the broad outline is clear. The war began in the years following the death of Huayna Capac, almost certainly from smallpox brought by travelers to the Caribbean, in or around 1527. It ended with the defeat and capture of Huáscar at Andamarca in 1532, only months before the Spanish appeared in the highlands.

The Death of Huayna Capac and the Question of Succession

The Sapa Inca Huayna Capac died, probably in late 1527 or early 1528, after a reign of more than thirty years. He had been campaigning in the northern frontier for years and had established a quasi-independent northern power base centered on Quito in what is now Ecuador. The question of his successor was not straightforward. According to the official Inca rules of succession, the throne should have passed to a son of the principal queen, but Huayna Capac had accumulated a large number of wives and concubines, and the politics of the court had been complicated by the long absence of the emperor from Cusco.

The two principal claimants were Huáscar, the son of a Cusco-born queen of the Inca royal panaca, and Atahualpa, the son of a princess of the Caranqui kingdom of Ecuador who had been taken as a concubine. Huáscar was the older of the two and the legitimate heir by the strict rules of the Cusco court. Atahualpa was the favorite of his father in his last years and had been raised in the northern military camps. The competition between them was thus a conflict not only between two individuals but between two regional power bases: the highland aristocracy of Cusco, with its traditional claims to imperial authority, and the northern military establishment that Huayna Capac had built around Quito.

The dynastic question was also entangled with a deeper succession issue: the fate of an older brother, Ninan Cuyochi, who had been declared heir in the early 1520s but who had died, almost certainly of smallpox, before Huayna Capac himself. The death of Ninan Cuyochi opened the succession to his half-brothers, and the resulting ambiguity was one of the causes of the war. The role of Ninan Cuyochi and the broader dynastic question is treated in detail in the article on Ninan Cuyochi and the Inca succession crisis.

The Outbreak of the War

The war began in the late 1520s with a series of confrontations between the partisans of Huáscar in Cusco and the partisans of Atahualpa in the north. The first serious military incident is recorded by Cieza de León as a skirmish near the bridge of Chacamarca, in the central highlands, in which an escort of Atahualpa’s men clashed with a force sent by Huáscar. The incident escalated into a full-scale campaign in the central Andes, with armies mobilized from both the southern highland provinces loyal to Huáscar and the northern provinces loyal to Atahualpa.

The chronicle accounts suggest that the initial battles went in Huáscar’s favor. A large Cusco army invaded the central highlands and threatened the northern territories, and several of Atahualpa’s commanders were defeated in the field. By about 1530, however, the war had turned against Huáscar. The northern army, organized by Atahualpa’s experienced generals — most famously Quisquis and Calcuchimac — won a series of decisive engagements, and the Cusco army was forced to retreat. The decisive battle of the war is generally identified with the Battle of Chimborazo, fought in the highlands of modern Ecuador, in which the northern army routed the Cusco forces and effectively ended Huáscar’s hopes of victory in the north.

The Campaigns in the South

After the victory in the north, Atahualpa’s generals led a large army southward into the central highlands, with the goal of capturing Cusco and forcing Huáscar to submit. The southern campaign was a long and destructive operation. The chronicle accounts describe a series of engagements at major highland sites — Tomebamba in the north, Cajamarca in the northern highlands, and Huánuco Pampa, Jauja, and Vilcashuamán in the central highlands — in each of which the northern army prevailed. The chronicles record many atrocities on both sides, including the execution of captured Cusco nobles and the destruction of provincial huacas and administrative centers.

The southern campaign was also a campaign of systematic terror. The northern armies killed thousands of soldiers and civilians, and they used the destruction of Cusco panacas and the desecration of royal mummies as a deliberate strategy of intimidation. The campaign culminated in the Battle of Cotabamba and the Siege of Cusco, in which the northern forces captured the imperial capital and forced Huáscar to flee.

The Capture and Execution of Huáscar

Huáscar was captured in or near the town of Andamarca in the central highlands in 1532, after a long pursuit by Atahualpa’s generals. The chronicles record that he was brought before Atahualpa at a place called the Baño del Inca (the Inca’s Bath) near Cajamarca, and that he was subsequently executed — most accounts say by being bound and lowered into a deep well, although other methods of execution are also reported. The death of Huáscar ended the war, and Atahualpa prepared to march south to take up residence in Cusco and to be crowned as the new Sapa Inca.

The timing of Huáscar’s death was catastrophic. It occurred in the first half of 1532, only months before the Spanish expedition under Pizarro entered the highlands. Atahualpa was thus the uncontested victor of the civil war, but he was also the emperor of an empire in ruins. The southern provinces had been devastated by the war, the Cusco aristocracy had been largely destroyed, the royal panacas had lost their mummies and treasures, and the northern armies were exhausted and dispersed across a continent-length territory. The empire that Atahualpa led to the Battle of Cajamarca in November 1532 was, in many respects, the ghost of the empire that Huayna Capac had ruled five years earlier.

The Consequences of the War

The civil war had three long-term consequences that shaped the conquest. First, it destroyed the imperial elite. The Cusco aristocracy, the religious establishment, and the highland administrative class had been devastated by the fighting and by the punitive measures of Atahualpa’s generals. Second, it dispersed the imperial armies. The veteran troops of Huayna Capac’s northern campaigns had been used up in the civil war, and the forces that Atahualpa could bring to bear against the Spanish were much smaller and less well-organized than the armies of a generation earlier. Third, it destroyed the legitimacy of the imperial cult. The panacas of the dead emperors, the mummies of past Sapa Incas, and the elaborate ceremonial life of the court had all been disrupted by the fighting, and the population’s confidence in the imperial order had been shaken. The war between Huáscar and Atahualpa is therefore not merely a dynastic dispute: it is the event that made the conquest possible. The article on why the Inca civil war weakened the empire before the Spanish arrival treats these consequences in more detail.