The series of conflicts in the western United States between Indians, American settlers, and the United States Army are generally known as the Indian Wars. Many of these conflicts occurred during and after the Civil War until the closing of the frontier in about 1890. However, regions of the West that were settled before the Civil War saw significant conflicts prior to 1860, such as Texas, New Mexico, Utah, Oregon, California, and Washington state.
Arizona ranked highest, with 310 known battles fought within the state’s boundaries between Americans and Indians. Also, Arizona ranked highest of the states in deaths from the wars. At least 4,340 people were killed, including both the settlers and the Indians, over twice as many as occurred in Texas, the second highest-ranking state. Most of the deaths in Arizona were caused by the Apaches. 51 percent of the battles took place in Arizona, Texas, and New Mexico between 1850 and 1890, as well as 37 percent of the casualties in the country west of the Mississippi River.
Canadian Mounties. The Mounties were never involved in a battle with Indians.