Michael and Jeff Shaara, Historical fiction. All of their American Revolution, Civil War, WWI, WWII, Korean War books. Great books. I've read plenty of Civil War books that are only history and they get kind of dry after awhile.
I read constantly. Mostly war history, biographies/autobiographies, from Teddy Roosevelt to Jerry Garcia.
The Killer Angels by Michael Shaara is where I began thirty years ago. If I have to choose one book to recommend, it's this one.