Leaving his second officer, Colonel Codallos, in charge of the government at Guatemala, Filisola began the military operations toward the end of November, taking possession of Santa Ana and marching[IV-12] upon the city of San Salvador, after having routed several small hostile detachments which attempted to check his progress. At the same time he published the decree of the Mexican government of November 4th, making of Central America, or the former captain-generalcy of Guatemala, three comandancias generales, namely, those of Chiapas, Sacatepequez, and Costa Rica, the capitals being respectively Ciudad Real, Nueva Guatemala, and Leon in Nicaragua.[IV-13] The government of San Salvador was in a precarious situation; although disposing of an army whose numerical force and equipment were not inferior to Filisola's, yet it had neither discipline nor experienced officers. The few encounters which had already taken place between the two forces had made it evident that the Salvadorans could not cope with Filisola's military skill. Under the circumstances, the authorities of San Salvador resolved upon incorporation with Mexico, and demanded that Filisola should proceed no farther. They declined to inform him of the terms under which they would submit to annexation, though offering to lay them before the congress in Mexico. They based this action on the ground that if their purpose became known in Salvador a revolution would certainly follow.[IV-14] The Mexican commander paid no heed to these ambiguous statements, which he considered devices to gain time, and continued his march.[IV-15] [Sidenote: FALL OF ITURBIDE.]