...assailing Hurlbut in front and on the left flank. The latter, as he withdrew, attempted to make a stand on the line of his camps, but, to avoid being cut off, fell back, at about four o'clock, upon Pittsburg Landing , thus allowing Chalmers and Jackson to move upon the flank of the line formed by Prentiss and Wallace. While all these forces were closing upon Wallace and Prentiss, General Hardee was engaged o...