(For the place of the turning point of the American Civil War which this marker commemorates, see High-water mark of the Confederacy.) The High Water Mark of the Rebellion Monument is a Gettysburg Battlefield memorial which identifies the Confederate Army of Northern Virginia units of the infantry attack on the Battle of Gettysburg, third day, with a large bronze tablet, as well as the Union Army of the Potomac's "respective troops who met or assisted to repulse Longstreet's Assault." The memorial is named for the line of dead and wounded of Pickett's Charge which marked the deepest penetration into the Union line at The Angle when "4,500 men threw down their arms and came in as prisoners". The line is now generally marked with unit monuments which are also historic district contributing s