In the summer of 1846, the Army of the West marched through Santa Fe, en route to invade and occupy the Western territories claimed by Mexico. Fueled by the new ideology of “Manifest Destiny,” this land grab would lead to a decades-long battle between the United States and the Navajos, the fiercely resistant rulers of a huge swath of mountainous desert wilderness. In Blood and Thunder, Hampton Sides gives us a magnificent history of the American conquest of the West.