Auxiliary Indians or
indios auxiliares is the term used in old
Spanish chronicles and historical texts for the
indigenous peoples who were integrated into the armies of the Spanish conquerors with the purpose of supporting their advance and combat operations during the Conquest of America. They acted as guides, translators, or porters and in this role were also called
yanakuna, particularly within the old
Inca Empire and
Chile. The term was also used for formations composed of indigenous warriors or
Indios amigos (friendly Indians), which they used for reconnaissance, combat, and as reserve in battle. The auxiliary Indians remained in use after the conquest, during some revolts, in border zones and permanent military areas, as in Chile in the
Arauco War.