Confederate re-enactors look out at Fort Sumter in Charleston Harbor, from positions in Fort Moultrie early on April 12, 2011 in Charleston, SC.
Confederate re-enactors fire their rifles during a display April 9, 2011 at Fort Moultrie in Charleston, South Carolina.
A slave pen in Alexandria, VA. Dated between 1861 and 1869.
Interior view of Fort Sumter showing ruins, taken by a Confederate photographer in 1864, Charleston, SC.
Union re-enactor Ross Collins of Rome, Georgia, is seen at Fort Sumter in Charleston, SC, April 12, 2011.STAFF
Re-enactors fire mortars at the Pitt Street Bridge near Fort Sumter, to commemorate moment the first shots of the Civil War were fired 150 years ago in Charleston, S.C. on Tuesday, April 12, 2011.
Confederate re-enactors stand on the ramparts of Fort Moultrie to mark the 150th anniversary of the Civil War on April 12, 2011 in Charleston, SC.
Civil War re-enactors gather at White Point Garden near Fort Sumter, S.C., for a candlelight sunrise concert Tuesday, April 12, 2011 to commemorate the moment the first shots of the Civil War were fired.
Confederate re-enactors march during a demonstration April 9, 2011, at Fort Moultrie in Charleston, South Carolina.Richard Ellis/Getty Images