General Polk stated, with all respect to General Bragg’s great abilities in the direction of organization and discipline, that he had been wanting in the higher elements of generalship in the conduct of the campaign; and that, in view of the admitted possibilities of the campaign, he considered it a failure—an opinion, he said, he believed Generals Smith and Hardee shared with him. He further said that General Bragg had lost the confidence of his generals, and, in answer to a suggestion from the President of a change of commanders, requested that General Joseph E. Johnston should be assigned to the command of the army, if a change were made.
1893, William M[ecklenburg] Polk, “The Kentucky Campaign”, in Leonidas Polk, Bishop and General, volume II, London: Longmans, Green, and Co. and New York: […], page 158