HARRIS, David Bullock, soldier, born at Frederick's Hall, Louisa County, Virginia, 28 September, 1814; died near Petersburg, Virginia, 10 October, 1864. He was graduated at the United States military academy in 1833, entered the 1st artillery, and, after serving a year, became assistant professor of engineering at West Point. He resigned from the army in 1835, and during several years thereafter was employed as a civil engineer on the James river and Kanawha canal and other important works, but subsequently was a large exporter of tobacco and flour. When Virginia seceded from the Union in April, 1861, he became a captain of engineers in the state forces. He was the first to reconnoitre the line of Bull Run, and when the position at Manassas Junction was occupied in force toward the end of May, 1861, he planned and constructed the works for its defence. He was attached to the staff of General Philip St. George Cooke at the battle of Bull Run, accompanied Beauregard to the west early in 1862, and there planned and constructed the works at Island No. 10 and Fort Pillow, and the river defences at Vicksburg. In October, 1862, he was transferred to Charleston, and took charge of the defensive engineering operations at that place. In 1864, as colonel of engineers, he went with General Beauregard to Virginia, and was employed on the defences of Petersburg. A short time before his death he was commissioned a brigadier-general.