Doubleday's Division, First Army Corps

   Doubleday's Division, on the right of the First Corps, moved to the attack at 5:30 A. M. September 17th, in the following order: Gibbon's Brigade in advance, supported by Phelps' and Patrick's. Hofmann's Brigade was held in reserve. The three Brigades Gibbon, Phelps and Patrick advanced, their right resting on the Hagerstown Pike, until Gibbon had reached a point 135 yeards north of this, when his right flank was fired into by the Confederate skirmishers posted behind a ledge west of and parallel to the Pike. The Division was then deployed, Gibbon, across the turnpike, with Battery B, 4th U. S. Artillery, in his right rear; Phelps moved up on Gibbon's left and Patrick crossed to the west of the turnpike and supported Gibbon's right and the Battery. The three Brigades became heavily engaged, advancing to and south of this point. After an obstinate contest of over an hour, with varying success, the Brigades were withdrawn to the fields north of D. R. Miller's and, subsequently, to the cover of the high ground beyond Joseph Poffenberger's.