Carnot Posey was born in Wilkinson County, Mississippi, on August 5, 1818. He obtained his college education in Jackson, Louisiana, after which he studied law at the University of Virginia. Returning home, he occupied himself as a planter for some years, and then practiced his profession at Woodville, Mississippi, until the beginning of the Mexican War, in which he served as a 1st lieutenant in the 1st Mississippi Rifles. He was appointed United States district attorney for the southern district of Mississippi by President Buchanan, and held this post until 1861, when he recruited the Wilkinson Rifles and was elected its captain. He was elected colonel upon the organization of the 16th Mississippi Infantry at Corinth in June. He fought at First Manassas, Ball's Bluff (Leesburg), and in all the subsequent campaigns of the Army of Northern Virginia. His promotion to brigadier general dates from November 1, 1862. His brigade later became a part of General Richard H. Anderson's division of the 3rd Corps. At Bristoe Station, on October 14, 1863, General Posey received a comparatively slight wound in the leg, which was not supposed to be serious at the time. However, infection soon set in, and he died in Charlottesville on November 13, 1863 in the home of Dr. Davis, a friend. He is buried on the grounds of the University of Virginia.
Ref: Generals in Gray, Lives of the Confederate Commanders by Ezra J. Warner. Printed by Louisiana State University Press, Baton Rouge and London.