Villa told a number of conflicting stories about his early life, and his "early life remains shrouded in mystery." According to most sources, he was born on 5 June 1878, and named Jose Doroteo Arango Arambula at birth. His father was a sharecropper named Agustin Arango, and his mother was Micaela Arambula. He grew up at the Rancho de la Coyotada, one of the largest haciendas in the state of Durango.

After Villa successfully captured the strategic prize of Torreon, Carranza ordered Villa to break off action south of Torreon and instead to divert to attack Saltillo. He threatened to cut off Villa's coal supply, immobilizing his supply trains, if he did not comply. This was widely seen as an attempt by Carranza to divert Villa from a direct assault on Mexico City in order to allow Carranza's forces under Alvaro Obregon, driving in from the west via Guadalajara, to take the capital first. This was an expensive and disruptive diversion for the Division del Norte. Villa's enlisted men were not unpaid volunteers but paid soldiers, earning the then enormous sum of one peso per day. Each day of delay cost thousands of pesos.  Disgusted but having no practical alternative, Villa complied with Carranza's order and captured the less important city of Saltillo, and then offered his resignation. Felipe Angeles and the rest of Villa's staff officers argued for Villa to withdraw his resignation, defy Carranza's orders, and proceed to attack Zacatecas, a strategic railroad station heavily defended by Federal troops and considered nearly impregnable. Since the colonial era, Zacatecas was the source of much of Mexico's silver, and thus a supply of funds for whoever held it. Villa accepted his staff's advice and cancelled his resignation, and the Division del Norte defied Carranza and attacked Zacatecas. Attacking up steep slopes, the Division del Norte defeated the Federals in the Toma de Zacatecas (Taking of Zacatecas), the single bloodiest battle of the Revolution, with Federal casualties numbering approximately 7,000 dead and 5,000 wounded, and unknown numbers of civilian casualties. (A memorial to and museum of the Toma de Zacatecas is on the Cerro de la Bufa, a key defense point where the Federal Army was entrenched.)  Villa's victory at Zacatecas in June 1914 broke the back of the Huerta regime. Huerta left the country on 14 July 1914. The Federal Army collapsed, ceasing to exist as an institution. In August 1914, Carranza and his revolutionary army entered Mexico City ahead of Villa. Civil war between the winners was the next stage of the Revolution.

Answer the following question by taking a quote from the article: What happened at Zacatecas?
the Division del Norte defied Carranza and attacked Zacatecas.