The type of novel about the Civil War is a historical novel.
Historical fiction is a literary genre that includes historical novels, which tell stories that are set in the past. Historical novels make reference to the social, cultural and economic conditions of the time in which the plot takes place. Moreover, there are some historical novels that only include historical characters, while there are others that also include fictional characters. Many novels are set in the period of the Civil War, such as The Alligators of Abraham by Robert Kloss and The Known World by Edward P. Jones.