In Aztec mythology, the god of war and sacrifice is Huitzilopochtli. He is revered as the deity of the sun and the patron god of the Mexica people. Huitzilopochtli played an essential role in their cosmology, symbolizing not only conflict but also the energy and vitality of the sun. His worship often included sacrifice, particularly human offerings, believed to sustain his strength and ensure the continuation of life. Festivals and ceremonies dedicated to Huitzilopochtli were integral to Aztec culture, underscoring his significance in both religious practices and military endeavors.