Having marched 10,000 men from nearby Cuzco, the royalist army under Jos?de La Serna, viceroy of Peru, met with the rebels and was unable to get organized before being overrun by the 6,000 Peruvians and Colombians under Antonio Jos?de Sucre.  
One force marched from a victory at Jun? and attacked the other force on December 9 while it was on its way down from the neighboring hills to meet them at this battle site.  Having marched 10,000 men from nearby Cuzco, the royalist army under Jos?de La Serna, viceroy of Peru, met with the rebels and was unable to get organized before being overrun by the 6,000 Peruvians and Colombians under Antonio Jos?de Sucre.  FTP, identify this 1824 battle, the last major engagement for South American independence.
One force marched from a victory at Jun? and attacked the other force on December 9 while it was on its way down from the neighboring hills to meet them at this battle site.  
Battle of Ayacucho