Robert E. Lee’s Reluctant Warrior: The Life of Cavalry Commander and Railroad Businessman Brigadier General Williams Carter Wickham. By Sheridan R. Barringer. ISBN 978-1-945602-25-2. Columbia, SC: Fox Run Publishing, 2024. Maps. Images. Bibliography. Index. Pp. 255. $32.95 (hardback). By the late afternoon of September 22, 1864, the Confederate Valley Army, commanded by Lieutenant General Jubal…