This is a picture of my mother's great grandfather Milton Doss. He was in the U.S. Army 143 Reg. Indiana Inf. and was discharged on October 17, 1865.
He is the only relative that I know of that was in the north army in the Civil War. There were many in the Confederate army from Arkansas, Louisiana, Mississippi and Tennessee.
(This was inspired by Abraham Lincoln's recent photos from his past.)