Orwell: A Homage To Catalonia.
I read Down and Out in Paris and London some years ago, and figured I'd follow up with more autobiographical Orwell. This one is more journalistic than his other books, but it's a fantastic account for whoever is interested in that part of European history. I'm a political scientist , and learning A LOT about the politics of the war.
For Whom the Bell Tolls is probably a lighter read about the war though, and Down and Out is a more accessbile Orwell autobiography.