troops destined to operate against the insurgents of Guerrero in the south.
Yturbide left the capital in November, and a month later found himself confronted by an enemy of something like three thousand men. After several encounters unfavorable to his command, Yturbide entered into an active correspondence with the opposing chief, the result of which was an interview for friendly conference. Both generals found themselves in accord, for, to the surprise of Guerrero, his opponent revealed an ardent desire to proclaim independence. Guerrero, without personal ambition, willingly handed over the command to the renegade, who announced, on February 24th, the so-called "Plan of Iguala."
Three essential articles made up this proposal: (1) the preservation of the Roman Catholic Church, with the exclusion of other forms of religion; (2) the absolute independence of Mexico under the government of a moderate monarchy with some member of the reigning house of Spain upon the throne; and (3) the amicable union of Spaniards and Mexicans. These three clauses were called the "three guaranties." When the national Mexican flag was devised later, its colors represented these three articles of the national faith—white for religious purity, green for union, and red for independence. The army of Yturbide was known as the army of the three guaranties.
Upon this basis the contest was resumed. It found favor in many parts of Mexico, and the independent troops, with their chiefs, very generally gave in their adherence at once to the Plan of Iguala.