Little Women by Louisa May Alcott takes place during and after the Civil War. I know this because, in the first chapter, Mr. March is a chaplain in the army. Meg, awaiting the letter Mrs. March is about to read says she is proud of him for going as a chaplain as he was too old to be drafted. I know this takes place during the Civil War because Joe states she will try to be a "little woman" for him after hearing the letter, and then the text says that Jo felt that would be a lot harder than facing a rebel or two down South. This also clearly shows that Mr. March is in the Union army because of Jo's statement.