(September 14, 1862)
Upon the approach of the Sixth Corps, Army of the Potomac, from Jefferson, Col. T. T. Munford, Commanding Cavalry Brigade, prepared to dispute its advance through this Pass. Mahone's Brigade, Lt. Col. Parham, Commanding, was put in position at the foot of the mountain, with the Cavalry, dismounted, on either flank. Chew's (Va.) Battery of Horse Artillery and two guns of Grimes' Portsmouth (Va.) Battery were placed half way up the mountain; later in the day Grimes' guns were put on the crest near this point, and for nearly three hours, assisted by five guns in the Brownsville Pass, Munford held the Union forces in check, but, overlapped on both flanks and pressed in front, was compelled to retire. As the line began to yield, the 10th Georgia of Semmes' Brigade came to its assistance. Cobb's Brigade brought back from Sandy Hook, met the retiring forces a few yards east of this, but the whole Command was quickly overpowered, and losing many captured, retreated into Pleasant Valley, the Cavalry to Rohrersville, the Infantry to Brownsville. Semmes abandoned Brownsville Pass and joined Cobb and Mahone. Wilcox moved back from near Weverton, and Kershaw and Barksdale (except 13th Mississippi) were withdrawn from Maryland Heights and, before midnight, the six Brigades, under command of R. H. Anderson, were in line across the Valley to oppose the Sixth Corps. McLaws with the four Brigades of Pryor, Featherstone, Armistead and Wright, and the 13th Mississippi of Barksdale's continued the investment of Harpers Ferry, which surrendered on the morning of the 15th.