Second Battle of Agua Prieta
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The Second Battle of Agua Prieta, 1 November 1915, was fought between the forces of Pancho Villa and those of the future President of Mexico, Plutarco Elías Calles, a supporter of Venustiano Carranza,
In mid 1915, the administration of Woodrow Wilson switched from backing Pancho Villa to supporting his opponent, Venustiano Carranza. Villa believed that help rendered by the United States to Carranza at Agua Prieta was the major factor in his defeat.
Gen. Plutarco Calles, the victor of Agua Prieta.
Constitutional Army
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The Constitutional Army, also known as the Constitutionalist Army, was the army that fought against the Federal Army, and later, against the Villistas and Zapatistas during the Mexican Revolution. It
Entrance of the constitutional cavalry to the Paseo de la Reforma.
Written on this photo taken between 1911 and 1914 is "despedido de los constitucionalistas" (farewell of the constitutionalists) of soldiers standing on top of S.P. de M. railroad cars during the Mexican revolution.