Introduction: development of an American transportation system -- The challenge of war management: Union and Confederate government responses -- The Confederacy: crisis and decision -- Southern railroads and the Longstreet movement: the effect of confederate mismanagement -- "A serious disaster": the federal government responds to defeat at Chickamauga -- The 11th and 12th corps movement: the success of northern management -- The failure of Confederate war management -- Appendix: units of Longstreet's corps and the 11th and 12th corps.