▁all ▁contributed ▁to ▁this ▁defeat . ▁ ▁Davis ▁considered ▁firing ▁John ston , ▁but ▁he ▁remained ▁a ▁popular ▁officer ▁and ▁had ▁many ▁political ▁al lies ▁in ▁Richmond , ▁most ▁not ably ▁Sen . ▁Louis ▁W ig fall . ▁Instead , ▁B rag g ' s ▁army ▁was ▁removed ▁from ▁John ston ' s ▁command , ▁leaving ▁him ▁in ▁control ▁of ▁only ▁Alabama ▁and ▁Mississippi . ▁ ▁While ▁V icks burg ▁was ▁falling , ▁Union ▁Maj . ▁Gen . ▁William ▁S . ▁Rose cr ans ▁was ▁adv ancing ▁against ▁B rag g ▁in ▁Tennessee , ▁forcing ▁him ▁to ▁ev acu ate ▁Ch att ano oga . ▁B rag g ▁achieved ▁a ▁significant ▁victory ▁against ▁Rose cr ans ▁in ▁the ▁Battle ▁of ▁Ch ick am aug a ▁( Se ptember ▁ 1 9 – 2 0 ), ▁but ▁he ▁was ▁defeated ▁by ▁U ly ss es ▁S . ▁Grant ▁in ▁the ▁Batt les ▁for ▁Ch att ano oga ▁in ▁November . ▁B rag g ▁res igned ▁from ▁his ▁command ▁of ▁the ▁Army ▁of ▁Tennessee ▁and ▁returned ▁to ▁Richmond ▁in ▁the ▁role ▁as ▁military ▁advis er ▁to ▁the ▁president . ▁Davis ▁offered ▁the ▁position ▁to ▁William ▁J . ▁Har de e , ▁the ▁senior ▁corps ▁commander , ▁who ▁refused ▁it . ▁He ▁considered ▁P . G . T . ▁Be a ure g ard , ▁another ▁general ▁with ▁whom ▁he ▁had ▁poor ▁personal ▁relations , ▁and ▁also ▁Robert ▁E . ▁Lee . ▁Lee , ▁who ▁was ▁rel uct ant ▁to ▁leave ▁Virginia , ▁first ▁recommended ▁Be