Text of the marker is arranged to illustrate the movements of the Confederate Army during the Antietam Campaign of 1862:
September 10, 1862 from Frederick, Maryland
Confederate commander Lee sends part of his army to capture Harpers Ferry, while he waits in Maryland to advance on Pennsylvania.
Maryland Heights, MD
Confederates force Union soldiers off Maryland Heights.
Jackson arrives here on Schoolhouse Ridge, surrounding the Union garrison.
Jackson's forces bombard Harpers Ferry and outflank the Federals on Bolivar Heights.
September 15Union garrison surrenders, and Jackson advances on Sharpsburg to help Lee, leaving General A.P. Hill behind to deal with the captured prisoners and spoils of war.
South Mountain, MD
Lee's troops clash with the Union army and delay its counter attack.
Lee withdraws toward Sharpsburg, north of Showman's Knoll. He awaits news from Jackson at Harpers Ferry.
September 17, 1862Union and Confederate soldiers fight in the bloodiest day of the Civil War. Lee's invasion ends, President Lincoln issues the preliminary Emancipation Proclamation.