...f the line of entrenchments facing Richmond was occupied by four divisions, disposed as follows from right to left: Richardson, who had just been joined by the two brigades sent to Gaines' Mill; then Sedgwick , both under the orders of Sumner; farther on, Hooker and Kearny, composing Heintzelman's corps; at the extreme left, Keyes, with the divisions of Couch and Peck, guarding the passes of White Oak Swam...