Did the US Civil War have snipers?

Answer 1

Snipers played a role in the US Civil War, just as they did in the Napoleonic wars. On both sides of the war they were thoroughly trained in the art and science of long range marksmanship. And they were armed with the finest rifles available. Such rifles were the English Kerr or Whitworth. The rifles were slow to load and had delicate sights which overcame the loading problem. And, normally that was not a problem as the snipers were not in the main battle field, and hidden from view. Even misses were a drama for infantrymen and these soldiers learned to dread snipers. The fear was widespread among the ranks of both sides and the fears of the infantrymen were disproportionate to their actual numbers and effectiveness.

Answer 2

Yes, a common place for snipers to hide was in rocks. But they weren't the type of snipers we have today. If you go to Gettysburg a common sniper range is the Devil's Den.