Mystery Monday: Civil War soldier

As we have been scanning photos a small but growing portion of them are people who are obviously related to our family, but the name has been lost to history. I plan to post them here, with the information I do have, in the hopes that somewhere on the internet is someone who knows. If you have any more information about the people in these posts, please let me know.

I know that this gentleman was a soldier in the Civil War, but I don't know which side he was on, and either is likely. He is related to my husband, but I don't know if he is related to the Walker, Boyer-Pott, Holly or Barbour side. I know that my husband's great great grandfather, Julius Ebenezer Barbour was a soldier in the Civil War, as was the oldest of his two brothers, but there isn't much of a resemblance to him.