GILLMORE, gilfmor, QUINCY ADAMS (1825 88). An American soldier and eminent military engineer, born at Black River, Lorain County, Ohio. He graduated at West Point, as first in his class in 1849,.and was assigned to the Engi neer Corps, served as an assistant engineer in the building of Fortress lilonroe from 1849 to 1852, and from 1852 to 1856 was assistant instructor of practical military engineering at West Point, where he also acted as treas urer and quartermaster from September, 1855, to September, 1856. From 1856 to 1861 he was stationed at New York, where he was in charge of the Engineer Agency in trusted with the buying and the shipping .of materials for fortifications, and in 1857-58 was also in charge of the fortifications in New York harbor. During the Civil War he was one of the ablest military engineers in the Federal service.
He acted as chief engineer of the Port Royal Expeditionary Corps in 1861-62; was chief engi neer at the siege of Fort Pulaski, Ga.; from February to April, 1862, was in command during the bombardment and capture of that fort; and on April 28, 1862, was raised to the rank of brig adier-general of volunteers. He then commanded successively the District of Western Virginia (from September 28 to October 14, 1862), the First Division of the Army of Kentucky (Octo ber 14, 1862, to January 25, 1863), and the District of Central Kentucky (January 25, to April, 1863), and on March 30, 1863, was brevetted colonel in the Regular Army. From June 12, 1863, to April, 1864, he was in command of the Department of the South, and from July 16, 1863, to June 17, 1864, of the Tenth Army Corps, during which time he con ducted the land operations against Charleston, S. C., and participated in the battle of Drury's Bluff, and in the defense of Bermuda Hundred. In July, 1864, he commanded two divisions of the Nineteenth Army Corps in the defense of Wash ington, and the pursuit of General Early (q.v.).
On March 13, 1865, he was breveted brigadier general in the Regular Army, and major-gen eral in the Regular Army; and on December 5, 1865, he resigned from the volunteer service. After the close of the war he served as superin tending engineer of the fortifications on Staten Island from 1866 to 1869, 1870 to 1882, and 1883 to 1884; of the coast defenses from Cape' Fear River, N. C., to Saint Augustine, Fla., from 1869 to 1882, and from 1883 to 1884; and was super intending engineer of surveys of rivers and har bors in North Carolina, South Carolina, Georgia, and East Florida from 1870 to 1882, and again from 1883 to 1888, during which time he was in charge of various river and harbor improvements of importance. He was president of the Missis sippi River Commission from 1879 to 1882, was raised to the regular rank of colonel of engineers in February, 1883„ and at various times was a member of important engineer boards. In 1876 lie was one of the judges at the Centennial Expo sition, and presented to the Bureau of Awards able reports on Portland, Roman, and Other Cements and Artificial Stones, and on Brick Making Machinery, Brick-Kilns, Perforated and Enameled Erick, and Pavements. He published Siege and Reduction of Fort Pulaski (1862); A Practical Treatise on Limes, Hydraulic Cements, and Mortars (1863) ; Engineering and Artillery Operations Against Charleston, S. C., in 1863 (1865; supplement 1868) ; Beton, Coignet, and Other Artificial Stones (1871); The Compressive Strength, Specific Gravity, and Ratio of Absorp tion of Building Stones of the United States (1876) ; and A Practical Treatise on Roads, Streets, and Pavements (1876).