 While action continued on the southern end of the battlefield, the three corps of Hancock, Burnside, and Warren were occupying a 5-mile line that stretched southeast to Bethesda Church, facing the Confederates under A.P.Hill, Breckinridge, and Early.At the border between the IX and V Corps, the division of Maj. Gen. Thomas L. Crittenden, recently transferred from the West following his poor performance in the Battle of Chickamauga, occupied a doglegged position with an angle that was parallel to the Shady Grove Road, separated from the V Corps by a marsh known as Magnolia Swamp.