Osterhaus' Division of Blair's Corps, commanded by Brig. Gen. Peter J. Osterhaus, with the 1st Brigade under Brig. Gen. Charles R. Woods and the 2nd Brigade under Col. James A. Williamson, took position early on Nov. 24, 1863, on the left of Hooker's lines on and behind the hills west of Lookout Creek and in the vicinity of and below the railroad bridge. Preparations for crossing the creek were completed at 10 a.m. Woods' Brigade, the first to advance, moved with its left on the river road and was in action east of this point. As Williamson's regiments arrived from duties to which they had been assigned at the bridges, they were sent in part to the assistance of General Geary on the extreme right under the palisades and in part to strengthen Woods' line. Osterhaus' troops continued to act with the front lines until the withdrawal of the Confederates at 2 a.m. of the 25th.