He was in business in his native town, but had to leave the place on account of persecution by Manuel Lozada, a bandit, who became a kind of independent ruler in the Tepic territory. Corona joined the liberals, entered the army, soon obtained the rank of general, and fought against the army of Maximilian, especially in the western states, and the French troops never became masters of that part of the country. Corona organized the Army of the west, 8,000 strong, in 1866, and crossed the country, defeating the French in many encounters. He reached Querétaro, participated in the siege, and, after the final victory of the Mexicans, Maximilian surrendered to him on 15 May 1867. The republic having been reinstated, President Benito Juárez gave Corona a high military office, with residence at Guadalajara.
At that time Lozada, thinking to subjugate the whole nation, organized an army of 16,000 men, and issued a proclamation to his troops, telling them to expect no compensation but what they could get from the vanquished towns. On 28 January 1872, at daybreak, began a bloody battle, near Mojonera, between his forces and about 1,400 men under Corona. Losada was routed, leaving over 3,000 dead on the field, while the rest of his troops dispersed. Next day Corona entered Guadalajara in triumph, after having saved that city from the army of plunderers, for which he was given the title of “Hero de la Mojonera.”
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- This article incorporates text from a publication now in the public domain: Wilson, James Grant; Fiske, John, eds. (1900). "Corona, Ramón". Appletons' Cyclopædia of American Biography. New York: D. Appleton.