Felipe Ángeles Ramírez (1868–1919) was a Mexican military officer and revolutionary during the era of the Mexican Revolution. Having risen to the rank of colonel of artillery in the Federal Army of the Porfiriato, Ángeles was promoted to general during the brief presidency of Francisco I. Madero. After the Ten Tragic Days, he became unique in the history of the revolution by becoming the only Federal general to join the revolutionary cause in northern Mexico, serving with General Pancho Villa's División del Norte.

The Mexican Revolution was an extended sequence of armed regional conflicts in Mexico from 20 November 1910 to 1 December 1920. It has been called "the defining event of modern Mexican history" and resulted in the destruction of the Federal Army, its replacement by a revolutionary army, and the transformation of Mexican culture and government. The northern Constitutionalist faction prevailed on the battlefield and drafted the present-day Constitution of Mexico, which aimed to create a strong central government. Revolutionary generals held power from 1920 to 1940. The revolutionary conflict was primarily a civil war, but foreign powers, having important economic and strategic interests in Mexico, figured in the outcome of Mexico's power struggles; the U.S. involvement was particularly high. The conflict led to the deaths of around one million people, mostly noncombatants.