There were more casualties in just this one battle than in the whole Civil War though. And the Battle of the Somme that was being fought at the same time had ev

There were more casualties in just this one battle than in the whole Civil War though. And the Battle of the Somme that was being fought at the same time had even more dead in the same timeframe. These two battles fought in 1916 add up to more dead soldiers than there were participants in the whole Civil War. The combined population of France and Germany in 1916 was also about three times that of the US in 1860, but I think that doesn't make up for the x10 casualties.