Some other novels I like: Civil War Stories by Ambrose Bierce (Amazon), Company K by William March (Amazon) and Invisible Man by Ralph Ellison (Amazon).

Mark Twain, for all his bitterness and sarcasm, was just more fun for average people to read than Ambrose Bierce. But Bierce is the one who truly captured the Civil War–a terrible and awful conflict in which death and destruction and stupidity were far more prevalent than strategy or heroism. This book (half fiction and half memoir) contains the story “An Occurrence at Owl Creek Bridge,” which Kurt Vonnegut called the greatest short story ever written. Too many books about the Civil War are inaccessible, with their flanking movements and war vocabulary. This book is all people. Must read.