The high-water mark of the Confederacy refers to a location on Cemetery Ridge, outside Gettysburg, Pennsylvania. A high water mark denotes the highest level reached by a body of water. Here it refers to the deepest penetration by the Confederate States Army of the Union Army lines during Pickett's Charge of the Battle of Gettysburg during the American Civil War. The term does not imply that Gettysburg was the farthest north that Robert E.
