BROOKS, William Thomas Harbaugh, soldier, born in New Lisbon, Ohio, 28 January, 1821; died in Huntsville, Alabama, 19 July, 1870. He was graduated at the United States military academy in 1841 and served in Florida in 1841-'2. In 1843-'5 he was on frontier duty in Kansas, and in 1845-'6 served in the military occupation of Texas, becoming first lieutenant in the 3d infantry, 21 September, 1846. He was in nearly all the battles in the Mexican war, was brevetted captain, 23 September, 1846, for his conduct at Monterey, and major, 20 August, 1847, for services at Contreras and Churubusco. In 1848-'51 he was aide-de-camp to General Twiggs, and on 10 November, 1851, became captain in the 3d infantry. From this time until the civil war he served in various forts. In 1854 and again in 1858 he was on scouting duty, and from 1858 till 1860 was given sick leave. On 28 September, 1861, he was made brigadier-general of volunteers, and served in the peninsular campaign of 1862, being engaged at Yorktown, Lee's Mills, Golden's Farm, Glendale, and Savage Station, where he was wounded. In September, 1862, during the Maryland campaign, he was in the battles of South Mountain and Antietam, being wounded again at the latter place. In October and November, 1862, on the march to Falmouth, Virginia, he commanded a division, and again in the Rappahannock campaign, December, 1862, to May, 1863. From 11 June, 1863, till 6 April, 1864, he commanded the department of the Monongahela, and in the operations before Richmond in 1864 was at the head of the 10th army corps, being engaged at Swift's Creek, Drury's Bluff, Bermuda Hundred, Cold Harbor, and Petersburg. His health failing on account of wounds and exposure, he resigned on 14 July, 1864, and in 1866 went to a farm in Huntsville, Alabama, where he remained until his death.