Navajo and counter raiding citizens. In April 1860 one thousand Navajo warriors under Manuelito attacked the fort and were beaten off. The fort was abandoned at the start of the Civil War but was reoccupied in 1863 by Colonel Kit Carson and the 1st New Mexico Infantry. Carson was tasked by Brigadier-General James H. Carleton, Commander of the Federal District of New Mexico, to kill Navajo men, destroy crops, wells, houses and livestock. These tactics forced 9000 Navajos to take the Long Walk to a reservation at Bosque Redondo, New Mexico. The Bosque was a complete failure. In 1868 the Navajo signed another treaty and were allowed to go back to part of their former territory. The returning Navajo were restocked with sheep and other livestock. Fort Defiance was the agency for the new Navajo reservation until 1936; today it provides medical services to the region. Fort Apache was built on the Fort Apache Indian Reservation by soldiers from the 1st Cavalry and 21st Infantry in 1870. Only one small battle took place, in September 1881, with three soldiers wounded. When the reservation Indians were granted U.S. citizenship in 1924, the fort was permanently closed down. Fort Huachuca, east of Tucson, was founded in 1877 as the base for operations against Apaches and raiders from Mexico. From 1913 to 1933 the fort was the base for the "Buffalo Soldiers" of the 10th Cavalry Regiment. During World War II, the fort expanded to 25,000 soldiers, mostly in segregated all-black units. Today the fort remains in operation and houses the U.S. Army Intelligence Center and the U.S. Army Network. The Pueblos in Arizona were relatively peaceful through the Navajo and Apache Wars. However, in June 1891, the army had to bring in troops to stop Oraibi from preventing a school from being built on their mesa. Ranching After the Civil War, Texans brought large-scale ranching to southern Arizona. They introduced their proven range methods to the new grass country. Texas rustlers also came, and brought lawlessness. Inexperienced ranchers brought poor management, resulting in overstocking, and introduced destructive diseases. Local cattleman organizations were formed to handle these problems. The Territory experienced a cattle boom in 1873–91, as the herds were expanded from 40,000 to 1.5 million head. However, the drought of 1891–93 killed off over half the cattle and produced severe overgrazing. Efforts to restore the rangeland between 1905 and 1934 had limited