Clausewitz had no discernible influence on these events. That was not so with Jomini. The leading teacher at West Point, Dennis Mahan, had spent time in France studying the Napoleonic Wars and was an avowed Jominian, while his star pupil, Henry “Old Brains” Halleck, who became President Lincoln’s general-in-chief, had gone so far as to translate Jomini’s Life of Napoleon into English.