Human sacrifice in Aztec culture in the context of Bernal Díaz del Castillo

Huitzilopochtli (Classical Nahuatl: Huītzilōpōchtli, IPA: [wiːt͡siloːˈpoːt͡ʃt͡ɬi] ) is the solar and war deity of sacrifice in Aztec religion. He was also the patron god of the Aztecs and their capital city, Tenochtitlan. He wielded Xiuhcoatl, the fire serpent, as a weapon, thus also associating Huitzilopochtli with fire.

The Spaniards recorded the deity's name as Huichilobos. During their discovery and conquest of the Aztec Empire, they wrote that human sacrifice was common in worship ceremonies. These took place frequently throughout the region. When performed, typically multiple victims were sacrificed per day at any one of the numerous temples.

Aztec warfare concerns the aspects associated with the military conventions, forces, weaponry and strategic expansions conducted by the Late Postclassic Aztec civilizations of Mesoamerica, including particularly the military history of the Aztec Triple Alliance involving the city-states of Tenochtitlan, Texcoco, Tlacopan and other allied polities of the central Mexican region. This united the Mexica, Apulteca, and Chichimeca people through marriages.

The Aztec armed forces were typically made up of a large number of commoners (yāōquīzqueh [jaː.oːˈkiːskeʔ], "those who have gone to war") who possessed extensive military training, and a smaller but still considerable number of highly professional warriors belonging to the nobility (pīpiltin [piːˈpiɬtin]) and who were organized into warrior societies and ranked according to their achievements. The Aztec state's primary purpose was political expansion and dominance of and exaction of tribute from other city-states, a purpose that relied on constant warfare. Aztec society was also centered on warfare: every Aztec male received basic military training from an early age and one of the few possible opportunities of upward social mobility for commoners (mācehualtin [maːseˈwaɬtin]) was through military achievement, especially the taking of captives (māltin [ˈmaːɬtin], singular malli). Thus only specifically chosen men served in the military. The sacrifice of war captives was an important part of many of the Aztec religious festivals. Warfare was thus the main driving force of both Aztec economy and religion.

Tezcatlipoca (Classical Nahuatl: Tēzcatlīpohca [teːs̻kat͡ɬiːˈpoʔkaˀ]) or Tezcatl Ipoca was a central deity in Aztec religion. He is associated with a variety of concepts, including the night sky, hurricanes, obsidian, and conflict. He was considered one of the four sons of Ometecuhtli and Omecihuatl, the primordial dual deity. His main festival was Toxcatl, which, like most religious festivals of Aztec culture, involved human sacrifice.

Tezcatlipoca's nagual, his animal counterpart, was the jaguar. In the form of a jaguar he became the deity Tepeyollotl ("Mountainheart"). In one of the two main Aztec calendars (the Tonalpohualli), Tezcatlipoca ruled the trecena 1 Ocelotl ("1 Jaguar"); he was also patron of the days with the name Acatl ("reed"). A strong connection with the calendar as a whole is suggested by his depiction in texts such as the Codex Borgia and Codex Fejéváry-Mayer, where Tezcatlipoca is surrounded by day signs, implying a sort of mastery over them.