Ejército Trigarante
The Army of the Three Guarantees was created on February 24, 1821, and continued battling Spanish royalist forces which refused to accept Mexican independence. These battles continued until August 1821, when Iturbide and Spanish Viceroy Juan de O'Donojú signed the Treaty of Córdoba, virtually ratifying Mexico's independence. The Army was a decisive force during the Battle of Azcapotzalco. The victory in this last battle of the war cleared the way to Mexico City. On September 27, 1821, the Army of the Three Guarantees triumphantly entered Mexico City, led by Iturbide. The following day Mexico was declared independent.