Battle of Cempoala
The Battle of Cempoala was fought on 27 May 1520 at Cempoala, Mexico between the forces of Pánfilo de Narváez and the forces of Hernán Cortés, which were supported by Chinantec warriors. Background. Cortés was leading a semblance of an expedition in eastern Mexico, amassing treasures in an attempt to convince the King of Spain to leave his conquest enterprise beyond Diego Velázquez de Cuéllar’s control. When Velázquez heard about this, he was furious. He decided to send Pánfilo de Narváez to regain control of the expedition. On March 5, Narváez departed for Mexico. Voyage. The  voyage was chaotic from the start. Heavy storms sank 6 of the 19 ships, killing about 50 men. Several of the ships split up and Narváez didn’t land until April 22, at which point Cortés had already found extravagant lodging in Tenochtitlan. López Ayllón de la Audiencia de Santo Domingo, the representative for the King of Spain, arrived early. Planning. Immediately after landing, Narváez attacked a small coastal garrison led by Sandoval. Narváez' attack failed, causing him to lose several prisoners, which were sent to Cortes to warn him of the danger. In Mid-May, Cortes left Tenochtitlan to  deal with Narváez. Narváez took advantage of his numerical superiority and captured the city of Cempoala, making it his base of operations. Cortés sent a soldier to contact their Chinantec allies for help. He returned with 200 warriors armed with long pikes, needed to counter Narváez's cavalry, and the promise that 2.000 more warriors would follow later. Battle. On May 27, Cortés, Sandoval, and fellow conquistador captains launched a surprise attack on Narváez's forces in the middle of the night with 266 soldiers and 200 native auxiliary troops. Due to heavy rainfall and superior numbers, Cortesian forces quickly  captured his opponent's cavalry and artillery. Narváez's forces retreated to the main temple of Cempoala, but attempted to flee as opposing Spanish-native forces prepared to surround it. In the ensuing chaos, Narváez was hit by a pike in the eye, wounding him badly and allowing him to be captured. During the battle, Xicomecoatl, the ruler of the city of Cempoala, was stabbed by one of Narváez's soldiers and badly wounded. After the battle, Cortés, upon being notified of his ally’s wounds, ordered him to be taken to his room for his wounds to be cured . Aftermath. Narváez was taken prisoner for two years as most of his former troops aligned with Cortés due to the allure of Tenochtitlan's riches. The most immediate fratricidal threat to Cortés' campaign was thwarted, marking a pivotal Cortesian victory in the course of the Spanish-Aztec War. Velázquez, instead of eliminating Cortés as he had planned, essentially replenished and reinforced the army of his nemesis. The main Chinantec force summoned by Cortés arrived late, being 1500 rather than 2000, and did not partake in the battle. They would be employed instead to watch over Narváez's contingent. It is  believed the initial 200 did fight, however. Smallpox outbreak. Several of Narváez's soldiers had smallpox and during the battle it spread to some of Cortés's forces, many of whom went to Tenochtitlan, spreading smallpox to the Native Americans. The subsequent pandemic killed millions of Native Americans, possibly even 90% of the indigenous population.