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,
Army of the West (1793) of staff. On 17 February 1795 a pacification was signed by the political representatives of the warring sides. The Vendeans were allowed complete freedom of worship and were free from conscription for several years. In return, they recognized the First French Republic. The peace did not last long. Revolt broke out in the Vendée on 24 June under the leadership of François de Charette. At this time Canclaux was ill so Grouchy was the acting commander. Grouchy first moved against a threatened invasion and then sent reinforcements to the Army of the Coasts of Brest which was then under the