Álvaro Obregón (1880-1928) was a Mexican revolutionary general and president. His administration marks the beginning of the constructive phase of the Mexican Revolution.

Anative of Sonora, born on Feb. 19, 1880, at Siquisava near Álamos, Álvaro Obregón was educated in his home state and was principally a small landholder when he first entered politics in 1911, winning election as municipal president of Huatabampo. The following year he recruited a small force to defend Francisco Madero's government against the Pascual Orozco rebellion. Promoted to the rank of colonel during this campaign, he was named military commander of the state capital, Hermosillo, in 1913.

That year Obregón organized resistance against Victoriano Huerta in Sonora, capturing Nogales on March 13, 1913. Venustiano Carranza designated him head of the war section of the Constitutionalists' Secretariat of the Interior and commander of the Northwest Army. While Pancho Villa moved southward...