Gouverneur K. Warren
The demonstration would take place near Morton's Ford, near a bend in the Rapidan River which formed a mile wide patch of land. Major General Edward Johnson's division of Richard Ewell's Second Corps had dug a series of entrenchments across the base of the bend. The Union II Corps, temporarily under the command of John C. Caldwell due to the illness of Gouverneur K. Warren, would move to Morton's Ford, with the I Corps marching to nearby Racoon Ford to the west and the cavalry crossing at Robertson's Ford.