Viceroyalty of Peru arrived in Lima with Antonio José de Sucre to plan the offensive. In February 1824 the royalists briefly regained control of Lima. Olañeta's Rebellion started by surprise and the entire royalist army of Upper Peru (today's Bolivia) revolted, led by Pedro Antonio Olañeta (royalist) against La Serna, the viceroy of Peru (a liberal). This broke the royal army and started a civil war in Upper Peru. Having regrouped in Trujillo, Bolívar in June led his rebel forces south to confront the Spanish under Field Marshal José de Canterac. The two armies met on the plains of Junín on August 6,
Provinces of Peru Provinces of Peru The provinces of Peru () are the second-level administrative subdivisions of the country. They are divided into districts (). There are 196 provinces in Peru, grouped into 25 regions except for the Lima Province which does not belong to any region. This makes an average of seven provinces per region. The region with the fewest provinces is Callao (one) and the region with the most is Ancash (twenty). While provinces in the sparsely populated Amazon rain forest of eastern Peru tend to be larger, there is a large concentration of them in the north-central area of the