the remaining portion of the "en echelon" attack was the responsibility of maj. gen. richard h. anderson's division of a.p. hill's third corps, and he attacked starting at about 6 p.m. with five brigades in line, commencing on the right with brig. gen. cadmus m. wilcox, followed by perry's brigade (commanded by col. david lang), brig. gen. ambrose r. wright, brig. gen. carnot posey, and brig. gen. william mahone.