 The Nauvoo Legion was necessarily involved in the would-be conflict between Mormons and Federal forces sent to Utah in the late 1850s.After it was apparent no major hostilities would break out, a somewhat more conciliatory relationship developed between Federal troops and the Legion.In 1857 the honorable reputation of the Utah-based Nauvoo Legion took a blow when Nauvoo Legion members in Iron County participated in the murder of 120 immigrants moving through Utah to California.