Bernardo O'Higgins accepted the position instead, and became the leader of an independent Chile. He was granted dictatorial powers as Supreme Director on 16 February 1817. On 12 February 1818, Chile proclaimed itself an independent republic. Throughout the war with the royalists, O'Higgins had engaged in an ongoing feud with José Miguel Carrera. After their retreat in 1814, O'Higgins had fared much better than Carrera, who found little support forthcoming from San Martín, O'Higgins' political ally. Carrera was imprisoned to prevent his involvement in Chilean affairs; after his escape, he ended up taking the winning side in the Argentine Federalist war, helping
Army of the North Goyeneche and Joaquín de la Pezuela, an able and experienced soldier, had the advantage, he negotiated with Goyeneche a 40-day armistice. The Assembly in Buenos Aires and the viceroy of Peru, José Fernando de Abascal, disapproved of this agreement. The royalists attacked by surprise, disregarding the agreement, before the arrival of reinforcements at the Battle of Vilcapugio on 1 October 1813. The royalist army, commanded by brigadier Joaquín de la Pezuela and with 4,000 men and 12 pieces of artillery confronted a patriot army with a high morale composed of 3,500 men, 14 pieces of artillery and cavalry mounted mostly