. ▁When ▁the ▁left ▁column ▁of ▁Union ▁forces ▁arrived , ▁an ▁officer ▁believed ▁that ▁they ▁were ▁his ▁own ▁pick ets ▁returning , ▁ordered ▁his ▁men ▁not ▁to ▁fire ▁and ▁rode ▁forth ▁to ▁bring ▁them ▁into ▁the ▁camp . ▁The ▁Confeder ate ▁officer ▁was ▁killed ▁by ▁a ▁shot ▁from ▁the ▁Union ▁troops , ▁and ▁the ▁second ▁part ▁of ▁the ▁battle ▁comm enced ▁with ▁fier ce ▁fighting . ▁After ▁the ▁right ▁Union ▁column ▁had ▁with dra wn , ▁Johnson ▁ordered ▁all ▁his ▁troops ▁who ▁had ▁been ▁fighting ▁there ▁to ▁join ▁the ▁battle ▁on ▁the ▁left ▁fl ank , ▁and ▁the ▁concentr ated ▁Confeder ate ▁fire ▁broke ▁up ▁the ▁left ▁Union ▁assault ▁and ▁the ▁final ▁Union ▁troops ▁with d rew . ▁ ▁In ▁a ▁pier cing ▁winter ▁wind , ▁fighting ▁had ▁ra ged ▁for ▁much ▁of ▁the ▁sun lit ▁morning ▁as ▁each ▁side ▁man eu ver ed ▁on ▁the ▁hill side ▁s lop es , ▁fields ▁and ▁woods ▁to ▁gain ▁the ▁advantage . ▁On ▁the ▁right ▁fl ank , ▁Mil roy ' s ▁force ▁found ▁a ▁position ▁in ▁a ▁mountain ▁clear ing , ▁among ▁the ▁fallen ▁tim ber , ▁st umps ▁and ▁br ush , ▁which ▁proved ▁to ▁be ▁too ▁difficult ▁for ▁the ▁Confeder ate ▁inf antry ▁to ▁dis l odge . ▁A ▁Confeder ate ▁art illery ▁battery ▁un lim ber ed ▁and ▁un le ashed ▁a ▁" st orm ▁of ▁round ▁shot ▁and ▁can ister ▁among ▁them , ▁knock ing ▁their ▁tim ber ▁def ences ▁about ▁their ▁heads , ▁and ▁making ▁their ▁nest ▁too ▁hot