The Twenty-ninth regiment moved one-half mile for shelter, remained here until 9 P. M., when it marched forward until 3 o’clock A. M., of the 27th; halted, moved forward a distance of three miles, and again halted. At 1 o’clock P. M., moved in the direction of Warrenton Junction, and camped for the night (no rations for supper or breakfast). On the morning of the 28th day of August, the regiment moved at 5 A. M., marched three miles and halted, drew rations and moved on in the direction of Bristow station, and camped for the night. Heavy firing in our advance all day. 29th, remained in camp, about two miles above Bristow station. 30th, marched at 6 o’clock A. M. and halted at Bristow station, and remained till 5 o’clock P. M., when the enemy was reported in our rear. The sick and disabled were moved to Alexandria and other points. August 31st, teams and trains containing camp and garrison equipage and other army supplies, were moved in the direction of Fairfax Court House. During the campaign under Major-general Pope from August 20th until the regiment reached Alexandria on the 2d day of September, 1862, it was one continuous march and counter-march, by day and night, moving up the Rappahannock as far as White Sulphur Springs. On the 29th and 30th of August near the Bull Run battle ground. A very hard battle was fought, in which the Nationals were forced from the field, and again late in the afternoon on the 1st day of September at Chantilly, a short distance from Fairfax Court House, a sanguinary battle was fought, which continued late in the evening. In this last engagement the Nationals held the field at night, and on the 2d the Union army fell back within the fortifications around Washington city. During the last two or three days of the above campaign the Twenty-ninth regiment was completely cut off from the main army, as it had been ordered to guard the quartermaster stores with other government property on the railroad at and near Bristow station, and when ordered to join its brigade it found the enemy in the rear, so that it was only by a circuitous route in the direction of Brintsville, and a forced march that it reached the Chantilly battlefield during the engagement, on September 1st. Here it bivouacked for the night, and on the following day marched to Arlington heights, via Alexandria, where it went into camp.