Army of the Three Guarantees
The two main figures behind the Plan were Agustín de Iturbide (who would become Emperor of Mexico) and Vicente Guerrero, revolutionary rebel leader and later President of Mexico. The Army of the Three Guarantees was formed by the unified forces Iturbide and Guerrero to defend the ideals of the Plan of Iguala. On 24 August 1821, Iturbide and Spanish Viceroy Juan O'Donojú signed the Treaty of Córdoba in Córdoba, Veracruz, ratifying the Plan of Iguala, and thus confirming Mexico's independence.