José de San Martín Chile. The battle began on 12 February. San Martín organized a pincer movement, with Soler leading the west column and O'Higgins the east one. O'Higgins, eager to avenge the defeat at Rancagua, rushed to the attack, instead of coordinating with Soler. This gave the royalists a brief advantage. San Martín instructed Soler to rush the attack as well. The combined attack was successful and San Martín's column secured the final victory. The battle ended with 600 royalists dead and 500 prisoners, with only 12 deaths and 120 injuries in the Army of the Andes. The army triumphantly entered Santiago de
Army of the North a victory at Utarango but was later defeated on 12 February by the San Juan river. Rondeau received an order to retreat to Tucumán. The army, almost beaten, marched for nine months going through Potosí and Humahuaca until reaching Tucumán. On 7 August 1816 at Trancas, Rondeau was replaced again by Manuel Belgrano. Martín Miguel de Güemes was named commander of the northern border. Belgrano moved the army to the citadel built by San Martín in the city of Tucumán. There he attempted to rebuild the morale, and materials, in search for a new action in Upper Peru, combining with