Summary: <p>Tens of thousands of visitors are expected to flood the 6,000-acre Gettysburg National Military Park and surrounding town this week to commemorate the 150th anniversary of the Battle of Gettysburg. The events of July 1-3, 1863, produced more than 50,000 casualties, with an estimated 7,500 soldiers killed. Many historians consider Gettysburg a major turning point of the Civil War after Northern forces turned away a Confederate advance. And in the decades following the conflict, the battleground became a symbol of reconciliation. Diane and her guests discuss the significance of the Battle of Gettysburg and how it's remembered.</p>
