XI. Invasion of Maryland 158 Barbara Frietchie 160 Battle of South Mountain 165 Surrender of Harper's Ferry 171 XII. Battle of Antietam 175 Hooker's Attack 187 Sumner's Attack 194 The Attack upon the Center 206 Richardson's Attack 212 General Franklin's Arrival 216 Burnside's Attack 221 XIII. After the Battle 238 XIV. The March from Harper's Ferry to Warrenton 250 Removal of General McClellan 269 APPENDIX. The Organization of the Army of the Potomac, April, 1862 278 LIST OF DIAGRAMS. PAGE Ball's Bluff 29 Battle of Dranesville 41 Battle of Williamsburg 69 Battle of Fair Oaks 91 Battle of Mechanicsville 112 Battle of Gaines's Mills 116 Battle of Glendale 128 Battle of Malvern 134 Battle of Groveton 149 Battle-Field of Antietam 180 Sedgwick's Attack 198 French's and Richardson's Attack 208 Burnside's Second Attack 232 INTRODUCTORY. For more than three years I have followed the flag of our country in the East and in the West and in the South,--on the ocean, on the land, and on the great rivers. A year ago I gave in a volume entitled "My Days and Nights on the Battle-Field" a description of the Battle of Bull Run, and other battles in Kentucky, Tennessee, and on the Mississippi. It has been my privilege to witness nearly all the great battles fought by the Army of the Potomac,--Antietam, Fredericksburg, Gettysburg, at the Wilderness, Spottsylvania, the North Anna, Coal Harbor and at Petersburg. Letters have been received from those who are strangers to me as well as from friends, expressing a desire that I should give a connected account, not only of the operations of that army, from its organization, but of other armies; also of the glorious achievements of the navy in this great struggle of our country for national existence. The present volume, therefore, will be the second of the contemplated series.