Battle of Shepherdstown

(Wikipedia) - The Battle of Shepherdstown, also known as the Battle of Boteler's Ford, took place September 19–20, 1862, in Jefferson County, Virginia (now West Virginia), at the end of the Maryland Campaign of the American Civil War.
After the Battle of Antietam, Confederate Gen. Robert E. Lee's Army of Northern Virginia prepared to defend against a Federal assault that never came. After an improvised truce for both sides to recover and exchange their wounded, Lee's forces began withdrawing across the Potomac River on the evening of September 18 to return to Virginia. Lee left behind a rear guard of two infantry brigades and 45 guns under his chief of artillery, Brig. Gen. William N. Pendleton, to hold Boteler's Ford. Continued

Photo: "Ford near Shepherdstown, on the Potomac. Pickets firing across the river. Alfred R. Waud, artist, Sept. 1862." (Wikipedia/Library of Congress)