I found a neat site that has 3D 'wiggle' animations of old photos. Their is a selection of civil war images, including this one. Check it out!
Pvt., 49th Indiana
"You say that it is your custom to burn widows. Very well. We also have a custom: when men burn a woman alive, we tie a rope around their necks and we hang them. Build your funeral pyre; [then] beside it, my carpenters will build a gallows. You may follow your custom. And then we will follow ours." - General Sir James Napier