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,
Japan–Peru relations Japan entered the Meiji period and began fostering diplomatic relations with several nations, after decades of isolation. Prior to establishing formal diplomatic relations; in June 1872, Japan and Peru had a diplomatic incident when a Peruvian ship called the "María Luz" set sail from Macau to Callao carrying 232 Chinese indentured labourers for Peruvian plantations. On the way to Peru, the ship encountered a severe storm which caused some damage to the ship and called on the Japanese port of Yokohama for repairs. At port, one Chinese laborer managed to escape and jumped to shore. Once on shore, the laborer