AMMEN, Jacob, soldier, born in Botetourt County Virginia, 7 January 1808. He was graduated at West Point in 1831, and served there as assistant instructor in mathematics, and afterward of infantry tactics until 31 August 1832. During the threatened "nullification" of South Carolina he was on duty in Charleston harbor. From 4 October 1834, to 5 November 1837, he was again at West Point as an instructor, and he resigned from the army, 30 November 1837, to accept a professorship of mathematics at Bacon College, Georgetown, Kentucky Thence he went to Jefferson College, Washington, Mississippi, in 1839, to the University of Indiana in 1840, to Jefferson College again in 1843, and returned to Bacon College in 1848. From 1855 to 1861 he was a civil en-grocer at Ripley, Ohio, and on April 18 of that year became captain in the 12th Ohio volunteers. He was promoted Lieutenant-Colonel 2 May and participated in the West Virginia campaign (June and July) under McClellan, where the first considerable federal successes of the war were gained. After the campaigns in Tennessee and Mississippi he was promoted to be Brigadier-General of volunteers 16 July 1862, and was in command of camps of instruction in Ohio and Illinois until 16 December 1863. From 10 April 1864, to 14 January 1865, when he resigned, he was in command of the district of east Tennessee.