Plan de Iguala in the context of "Army of the Three Guarantees"

At the end of the Mexican War of Independence, the Army of the Three Guarantees (Spanish: Ejército Trigarante or Ejército de las Tres Garantías) was the name given to the army after the unification of the Spanish troops led by Agustín de Iturbide and the Mexican insurgent troops of Vicente Guerrero, consolidating Mexico's independence from Spain. The decree creating this army appeared in the Plan de Iguala, which stated the three guarantees which it was meant to defend were religion, independence and unity. Mexico was to be a Catholic empire, independent from Spain, and united against its enemies.