...thousand, as terrible as any ever delivered by the Old Guard, with Ney for a leader, and under the eye of Napoleon, ended McClellan's efforts to break Lee's lines at Sharpsburg. On the retreat from Maryland , Hill brought up the rear, and at Shepherdstown inflicted upon the enemy, in repulse of a night attack made upon Pendleton's artillery, such fearful loss as effectually put an end to pursuit. In th...