"THE LOST ORDER"--SOUTH MOUNTAIN. How the Federals found the Despatch--With every Advantage McClellan "made haste slowly"--Lee turns back to meet him at South Mountain--Longstreet preferred that the Stand should be made at Sharpsburg--The Battle at the Pass--Many killed-- General Garland of the Confederate and General Reno of the Union Side--A Future President among the Wounded--Estimate of Forces engaged 212 CHAPTER XVII. PRELIMINARIES OF THE GREAT BATTLE. Confederates retreat from South Mountain--Federals follow and harass them--Franklin and Cobb at Crampton's Pass--A Spirited Action--Fighting around Harper's Ferry--Its Capitulation--The Confederates take Eleven Thousand Prisoners--Jackson rejoins Lee--Description of the Field of Antietam--McClellan posts his Corps--Lee's Lines advantageously placed--Hooker's Advance on the Eve of Battle should have been resisted 227 CHAPTER XVIII. BATTLE OF SHARPSBURG, OR ANTIETAM. Bloodiest Single Day of the War--Comparison of Casualties-- Hooker opens the Fight against Jackson's Centre--Many Officers among the Fallen early in the Day--McLaws and Walker in time to meet Sumner's Advance under Sedgwick--Around Dunker Chapel-- Richardson's Splendid Advance against the Confederate Centre the Signal of the Bursting of another Storm--Longstreet's and D. H. Hill's Troops stood before it--Fall of General G. B. Anderson--General Richardson mortally wounded--Aggressive Spirit of his Command broken--Wonderful Cannon-shot--General D. H. Hill's Third Horse killed under him 239 CHAPTER XIX. BATTLE OF SHARPSBURG, OR ANTIETAM (CONTINUED). Closing Events of the Great Struggle--Burnside crosses the Bridge he made famous--Toombs made Gallant Defence, but was outnumbered and dislodged--The Confederate Brigades from Harper's Ferry under A. P. Hill in Time for the Final Crisis-- Burnside's Advance arrested by them--The Battle against Burnside "appeared to spring from the Earth"--"Lee's old War Horse"--The Killing of a Kinsman at the Bridge seriously affects General D. R. Jones--The Sharp Fight at Shepherdstown-- Confederates retreat--Casualties of the Battle--Confederate Losses in the Campaign--Neither McClellan's Plan nor Execution was strong 256 CHAPTER XX. REVIEW OF THE MARYLAND CAMPAIGN.