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,
Scotland under the Commonwealth and were defeated by the New Model Army under Oliver Cromwell at Battle of Preston (1648). With many of its leaders captured, the Engagement regime fell in the Whiggamore Raid and the radical Presbyterian Kirk Party returned to power. After the execution of Charles I in January 1649, England was declared a Commonwealth. As soon as news of Charles I's execution reached Scotland, his son was proclaimed king as Charles II of Great Britain by the Scottish Parliament. After the failure of an attempted Highland rising led by James Graham, Marquis of Montrose, Charles accepted the offer of conditional support