A full decade after Appomattox, men who had worn the blue and those who had worn the gray were united in combat against common enemies: the aridity and dust of the Mojave Desert, and the cruelty of the warring Apaches. Some were professional military men, like Chris Herrold, called the Butcher for leading men on reckless missions from which few returned alive. But ex-Rebel Rick Montrill knew why Herrold sought danger like a man obsessed.