Actors playing Federal and Confederate troops reenact Pickett's Charge at the finale of the Blue Gray Alliance, during events marking the 150th anniversary of the Battle of Gettysburg, in Gettysburg, Pennsylvania June 30, 2013. The Battle of Gettysburg was fought July 1-3, 1863, in and near the town of Gettysburg, Pennsylvania and was the battle with the highest number of casualties in the Civil War. The Union army defeated a force led by Confederate General Robert E. Lee in what is often described as the turning point of the war. REUTERS/Mark Makela (UNITED STATES - Tags: ANNIVERSARY SOCIETY CONFLICT) 

Actors playing Federal and Confederate troops reenact Pickett's Charge at the finale of the Blue Gray Alliance, during events marking the 150th anniversary of the Battle of Gettysburg, in Gettysburg, Pennsylvania June 30, 2013. The Battle of Gettysburg was fought July 1-3, 1863, in and near the town of Gettysburg, Pennsylvania and was the battle with the highest number of casualties in the Civil War. The Union army defeated a force led by Confederate General Robert E. Lee in what is often described as the turning point of the war. REUTERS/Mark Makela (UNITED STATES - Tags: ANNIVERSARY SOCIETY CONFLICT TPX IMAGES OF THE DAY) 

As actors playing cavalry patrol the front line, federal artillery fires upon the confederate lines during Pickett's Charge at the finale of the Blue Gray Alliance reenactment during events marking the 150th anniversary of the Battle of Gettysburg, in Gettysburg, Pennsylvania June 30, 2013. The Battle of Gettysburg was fought July 1-3, 1863, in and near the town of Gettysburg, Pennsylvania and was the battle with the highest number of casualties in the Civil War. The Union army defeated a force led by Confederate General Robert E. Lee in what is often described as the turning point of the war. REUTERS/Mark Makela (UNITED STATES - Tags: ANNIVERSARY SOCIETY CONFLICT) 

Actors playing Confederate troops charge up a hill towards Union forces during a reenactment of The Battle of Little Roundtop during the Blue Gray Alliance events marking the 150th anniversary of the Battle of Gettysburg, in Gettysburg, Pennsylvania June 30, 2013. The Battle of Gettysburg was fought July 1-3, 1863, in and near the town of Gettysburg, Pennsylvania and was the battle with the highest number of casualties in the Civil War. The Union army defeated a force led by Confederate General Robert E. Lee in what is often described as the turning point of the war. REUTERS/Mark Makela (UNITED STATES - Tags: ANNIVERSARY SOCIETY CONFLICT) 

Union volunteer drummer boys await the charge to begin Pickett's Charge at the finale of the Blue Gray Alliance reenactment during events marking the 150th anniversary of the Battle of Gettysburg, in Gettysburg, Pennsylvania June 30, 2013. The Battle of Gettysburg was fought July 1-3, 1863, in and near the town of Gettysburg, Pennsylvania and was the battle with the highest number of casualties in the Civil War. The Union army defeated a force led by Confederate General Robert E. Lee in what is often described as the turning point of the war. REUTERS/Mark Makela (UNITED STATES - Tags: ANNIVERSARY SOCIETY CONFLICT TPX IMAGES OF THE DAY) 

Actors playing Confederate and Union troops lay "dead" after a reenactment of The Battle of Little Roundtop during the Blue Gray Alliance events marking the 150th anniversary of the Battle of Gettysburg, in Gettysburg, Pennsylvania June 30, 2013. The Battle of Gettysburg was fought July 1-3, 1863, in and near the town of Gettysburg, Pennsylvania and was the battle with the highest number of casualties in the Civil War. The Union army defeated a force led by Confederate General Robert E. Lee in what is often described as the turning point of the war. REUTERS/Mark Makela (UNITED STATES - Tags: ANNIVERSARY SOCIETY CONFLICT) 

Confederate troops (top) fire on the Federal (Union) postions (bottom) during the final battle of the Gettysburg conflict, "Pickett's Charge," is fought between Confederate and Federal (Union) soldiers as part of re-enactment activities July 7, 2013, recognizing the 150th anniversary of the U.S. Civil War battle in Gettysburg, Pennsylvania. Gettysburg officials are expecting 250,000 visitors to visit the small south-central Pennsylvania borough of about 7,700 residents for the anniversary. REUTERS/Gary Cameron (UNITED STATES - Tags: SOCIETY CONFLICT ANNIVERSARY) 

The 28th New York Volunteers fall in as the Federal (Union) camp wakes up during re-enactment activities July 7, 2013, recognizing the 150th anniversary of the U.S. Civil War battle in Gettysburg, Pennsylvania. Gettysburg officials are expecting 250,000 visitors to visit the small south-central Pennsylvania borough of about 7,700 residents for the anniversary. REUTERS/Gary Cameron (UNITED STATES - Tags: SOCIETY CONFLICT ANNIVERSARY) 

Max Todd (R) and Michael Barnes (L) fill canteens in the Federal (Union) camp during re-enactment activities July 7, 2013, recognizing the 150th anniversary of the U.S. Civil War battle in Gettysburg, Pennsylvania. Gettysburg officials are expecting 250,000 visitors to visit the small south-central Pennsylvania borough of about 7,700 residents for the anniversary. REUTERS/Gary Cameron (UNITED STATES - Tags: SOCIETY CONFLICT ANNIVERSARY) 

Federal (Union) troops march into position before the battle "Gallant Rally at the Klingle Farm" between Federal and Confederate forces during re-enactment activities recognizing the 150th anniversary of the U.S. Civil War battle in Gettysburg, Pennsylvania July 6, 2013. Gettysburg officials are expecting 250,000 visitors to visit the small south-central Pennsylvania borough of about 7,700 residents for the anniversary. REUTERS/Gary Cameron (UNITED STATES - Tags: SOCIETY CONFLICT ANNIVERSARY TRAVEL) 

A soldier tends his morning camp stove fire as the Confederate camp awakens at dawn during re-enactment activities recognizing the 150th anniversary of the U.S. Civil War battle in Gettysburg, Pennsylvania July 6, 2013. Gettysburg officials are expecting 250,000 visitors to visit the small south-central Pennsylvania borough of about 7,700 residents for the anniversary. REUTERS/Gary Cameron (UNITED STATES - Tags: SOCIETY CONFLICT ANNIVERSARY) 

Federal (Union) Colonel Edward Cross (L) forms his troops prior to the battle in "The Wheatfield" during re-enactment activities to recognize the 150th anniversary of the U.S. Civil War battle in Gettysburg, Pennsylvania, July 5, 2013. Cross, wearing a black headband, had a premonition that he would die in the battle which proved correct. Gettysburg officials are expecting 250,000 visitors to visit the small south-central Pennsylvania borough of about 7,700 residents for the anniversary. REUTERS/Gary Cameron (UNITED STATES - Tags: SOCIETY CONFLICT ANNIVERSARY TRAVEL) 

A young Federal (Union) flag bearer looks at his colors prior to the battle in "The Wheatfield" during re-enactment activities to recognize the 150th anniversary of the U.S. Civil War battle in Gettysburg, Pennsylvania, July 5, 2013. Gettysburg officials are expecting 250,000 visitors to visit the small south-central Pennsylvania borough of about 7,700 residents for the anniversary. REUTERS/Gary Cameron (UNITED STATES - Tags: SOCIETY CONFLICT ANNIVERSARY TRAVEL TPX IMAGES OF THE DAY) 

Federal (Union) troops fire on Confederates during a re-enactment battle "Cavalry Battle at Hunterstown" July 5, 2013 recognizing the 150th anniversary of the U.S. Civil War battle in Gettysburg, Pennsylvania. Gettysburg officials are expecting 250,000 visitors to visit the small south-central Pennsylvania borough of about 7,700 residents for the anniversary. REUTERS/Gary Cameron (UNITED STATES - Tags: SOCIETY CONFLICT ANNIVERSARY) 

Confederate cavalry troops bow their heads before a re-enactment battle "Cavalry Battle at Hunterstown" July 5, 2013 recognizing the 150th anniversary of the U.S. Civil War battle in Gettysburg, Pennsylvania. Gettysburg officials are expecting 250,000 visitors to visit the small south-central Pennsylvania borough of about 7,700 residents for the anniversary. REUTERS/Gary Cameron (UNITED STATES - Tags: SOCIETY CONFLICT ANNIVERSARY) 

Confederate soldier Lloyd Smith displays a half-cocked hammer on a rifle during re-enactment activities July 5, 2013 recognizing the 150th anniversary of the U.S. Civil War battle in Gettysburg, Pennsylvania. Gettysburg officials are expecting 250,000 visitors to visit the small south-central Pennsylvania borough of about 7,700 residents for the anniversary. REUTERS/Gary Cameron (UNITED STATES - Tags: SOCIETY CONFLICT ANNIVERSARY)