[3] In February 1913, President Madero was overthrown and murdered by a right-wing coup d’état known as The Ten Tragic Days.

Treviño joined Governor Carranza in refusing to pledge allegiance to the new government of Victoriano Huerta.

[citation needed] Treviño participated in the military battles that Carranza fought in Coahuila during the spring and summer of 1913.

However, most of their battles were defeats and so Carranza decided to abandon Coahuila and set up his rebel government in Sonora which had been secured by the Constitutionalists there.

Carranza's Constitutional forces were victorious and drove out the right-wing government of Victoriano Huerta in July 1914.

[citation needed] A peace convention was held in Aguascalientes in October 1914 which hoped to resolve the differences between Carranza and Villa.

Treviño is credited with constructing good defensive breastworks at El Ebano while Chao has been criticized for conducting unimaginative frontal attacks.

[8] Villa finally tired of this attack, and ordered Chao and Urbina to disengage and move the majority of their commands to the Celaya region where he was battling Álvaro Obregón.

For keeping the oil-rich region out of the hand of Pancho Villa, he was proclaimed a war-hero and promoted to major general.

[9] In April and May 1915, Pancho Villa and Álvaro Obregón engage in several long and deadly battles in the Celaya region of Mexico.

[citation needed] While Villa's army was broken, he continued to wage guerrilla war in the state of Chihuahua.

[11] President Wilson responded by sending American troops under the command of General Pershing into Chihuahua to pursue Villa.

Treviño and his command were forced to flee the city, while Villa captured arms and ammunitions, and freed political prisoners.

[19] At this point, President Carranza and Secretary of War Obregón begin to lose confidence in Treviño.

[citation needed] Treviño at this time was a subordinate of Pablo González; they both owed their positions to Carranza.