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,
Georgia (country) mostly by Armenians, ended because of British intervention. In 1918–1919, Georgian general Giorgi Mazniashvili led an attack against the White Army led by Moiseev and Denikin in order to claim the Black Sea coastline from Tuapse to Sochi and Adler for the independent Georgia. The country's independence did not last long. Georgia was under British protection from 1918–1920. In February 1921, during the Russian Civil War, the Red Army advanced into Georgia and brought the local Bolsheviks to power. The Georgian army was defeated and the Social Democratic government fled the country. On 25 February 1921, the Red Army entered