Don't forget Union Army Major General John Sedgwick, whose last words to his troops as they ducked and took cover at the Battle of Spotsylvania Court House in 1864-
"Why are you dodging like this? They couldn't hit an elephant at this distance." He then fell forward with a bullet hole below his left eye
Not absolutely certain but I think the Confederates had the better rifle at the time. it was a London Armory .577 percussion rifle based on the Enfield pattern. Enfield was a Gov't armory and didn't want to be seen as supporting a side and the London Armory was a private armory, so no problems??