General Edwin Vose Sumner, USA: a Civil War biography
"This biography emphasizes General Edwin Vose Sumner's role in developing the mounted arm of the U.S. Army. Born in 1797 he abandoned a merchant's career and entered the U.S. Infantry in 1819. He established the Cavalry School of Practice at Carlisle Barracks, Pennsylvania. He served with distinction in the Mexican War and commanded the Second Corps. "--