The Hualapai War, or Walapai War, was an armed conflict fought from 1865 to 1870 between the Hualapai native Americans and the United States in Arizona Territory. The Yavapai also participated on the side of the Hualapai and Mohave scouts were employed by the United States Army. Following the death of the prominent Yavapai leader Anasa in April 1865, the natives began raiding American settlements which provoked a response by the United States Army forces stationed in the area. By the spring of 1869 disease forced the majority of the Hualapais to surrender though some skirmishing continued for almost two more years.