Battle of the Maulenear the Maule River?
The Battle of the Maule was fought between a coalition of Mapuche people of Chile and the Inca Empire of Peru. The account of Garcilaso de la Vega depicts the three-day battle, which is generally believed to have occurred in the reign of Tupac Inca Yupanqui (1471-93 CE). Arguably the Inca's advances in Chile were halted by their unwillingness to commit greater resources in fighting the Mapuche. There are conflicting arguments between sources for the specific date, location, causes, etc for this battle.