General Rodolfo Fierro (1880 – 14 October 1915) was a railway worker, railway superintendent, federal soldier and a major general in the army of Pancho Villa during the Mexican Revolution in the Division del Norte. Fierro and his counterpart and fellow lieutenant, Tomas Urbina, have been cited as the two halves of Pancho Villa, Fierro representing his malicious side. It is believed Fierro met Pancho Villa in 1913 following the Madero revolution. Originating from Sinaloa, Fierro was a former federal officer having taken part in fighting against the Yaqui Indians. Following his role as a federal officer, Fierro went on to work as a railway man, eventually being absorbed into Villa's ranks.
Fierro's prominence is often cited back to the Battle of Tierra Blanca on 23 November 1913. The battle included 5,500 of Villa's soldiers, against an estimated 7,000 federal soldiers. Before the battle began Fierro had been sent South to destroy the railroad tracks, forcing the federal soldiers to halt. As Villa flanked the well armed federal soldiers with cavalry, a locomotive filled with dynamite and percussion caps was rammed into the federal soldiers train cars, the resulting explosion caused the federal soldiers to flee to nearby undamaged train cars in retreat. Fierro is then noted as riding on horseback after the escaping locomotive, climbing on to the locomotive, running across the roofs of the train cars, and shooting dead the boilerman and conductor, pulling the train to a complete stop. All federal soldiers captured were executed and in the battle Villa captured 4 locomotives, 7 machine guns, horses, rifles and 400,000 rounds of small arms ammunition. The death toll during the battle stood around 1,000 federal soldiers killed and 300 of Villa's.