Argentine War of Independence Chile, allied with the Mapuches. On April 4, Argentine Colonel Juan Gregorio de Las Heras had occupied Concepción, but the Royalists retreated to Talcahuano. In early 1818, Royalist reinforcements from the Viceroyalty of Peru arrived, commanded by general Mariano Osorio, and advanced towards the capital. San Martín then turned to scorched earth tactics and ordered the evacuation of Concepción, which he thought was impossible to defend. On 18 February 1818, the first anniversary of the battle of Chacabuco, Chile declared its independence from the Spanish Crown. On March 18, 1818, Osorio led a surprise attack on the joint Argentine-Chilean army,
Progressive Conservative Party of Newfoundland and Labrador leadership elections Progressive Conservative Party of Newfoundland and Labrador leadership elections This page lists the results of leadership elections held by the Progressive Conservative Party of Newfoundland and Labrador. After the defeat of the party's first leader in the 1949 general election and until 1966 the party leadership was officially vacant and the House leader served as de facto party leader. Mews was defeated in the 1949 general election and resigned sometime afterward. John Gilbert Higgins was elected House leader and became the first post-Confederation Leader of the Opposition. Higgins retired at the 1951 general election, and Peter Cashin was elected House