Victorio's War, or the Victorio Campaign, was an armed conflict between the Apache followers of Chief Victorio, the United States, and Mexico beginning in September 1879. Following his escape from the San Carlos Indian Reservation in southeastern Arizona, Victorio led a guerrilla war across the Southwest and northern Mexico. Many engagements were fought until the Mexican Army killed Victorio and defeated his warriors in October 1880. After Victorio's death, Chief Nana continued the war into 1881. Following the Battle of Cibecue Creek, in August 1881, Nana and his band joined Geronimo.