McClernand's command consisted--Monday morning--of the Forty-sixth Illinois, of Hurlbut's division, constituting his right; the Twentieth, Seventeenth, Forty-third, Forty-fifth, Forty-eighth, and Forty-ninth Illinois, of his own division, being his First and Second Brigades, and, on his left, the Fifty-third Ohio, of Sherman's division, and the Eighty-first Ohio, of W.H.L. Wallace's division. Except the two flanking regiments, the Forty-sixth Illinois and the Eighty-first Ohio, the regiments were extremely reduced. After firing had opened by Nelson and by Lewis Wallace, McClernand moved across the ravine of Brier Creek to the large open field, where his line was dressed; McAllister's battery was brought up and engaged a battery posted beyond, or in the proper front of, McClernand's First Brigade camp. Lewis Wallace's batteries beyond the timber to the northwest, and a battery with Sherman in the same direction, joined in the artillery combat. The Confederate battery becoming silent, McClernand moved forward and entered the camp of his First Brigade, being the northwestern extremity of his camp, without having encountered opposing infantry. It was discovered that a body of the enemy was advancing beyond the left of the line. McClernand moved by the flank to the left till the left regiments came to a field in rear of his camp, and charged across it against a battery and its supports on the farther side. The Fifty-third and Eighty-first Ohio recoiled, were ordered back, fell to the rear in some disorder, and the whole line retired. The Twenty-eighth Illinois was moved forward from Hurlbut's reserve and added to McClernand's left. The line again advanced, pushed the enemy back through McClernand's camp, where he made a stand, and McClernand was again compelled to yield. General McCook now extended his right by throwing forward the Louisville Legion. The two divisions connected, and the Twenty-eighth Illinois returned to the reserve.