High Quality Content by WIKIPEDIA articles! The Battle of Ollantaytambo (Spanish: Batalla de Ollantaytambo, IPA: ) took place in January 1537, between the forces of Inca emperor Manco Inca and a Spanish expedition led by Hernando Pizarro during the Spanish conquest of Peru. A former ally of the Spaniards, Manco Inca rebelled in May 1536, and besieged a Spanish garrison in the city of Cusco. To end the stand-off, the besieged mounted a raid against the emperor`s headquarters in the town of Ollantaytambo. The expedition, commanded by Hernando Pizarro, included 100 Spaniards and some 30,000 Indian auxiliaries against an Inca army more than 30,000 strong.