[449] On December 28, 1872, another setback took place to Grant's policy when General George Crook and the 5th Cavalry massacred about 75 Yavapai Apache Indians at Skeleton Cave, Arizona.[450]
During his second term, Grant's Indian policy fell apart.[451] On April 11, 1873, Major General Edward Canby was killed in Northern California south of Tule Lake by Modoc leader Kintpuash, in a failed peace conference to end the Modoc War.[452] Grant ordered restraint after Canby's death. The army captured Kintpuash, who was convicted of Canby's murder and hanged on October 3 at Fort Klamath, while the remaining Modoc tribe was relocated to the Indian Territory.[452] In 1874, the army defeated the Comanche at the Battle of Palo Duro Canyon, forcing them to finally settle at the Fort Sill reservation in 1875.[453] Grant pocket-vetoed a bill in 1874 protecting bison, and instead supported Interior Secretary Columbus Delano, who correctly believed the killing of bison would force Plains Native Americans to abandon their nomadic lifestyle.[454][ar] In April 1875, another setback occurred to Grant's policy. 