Another non-fiction one - sorry! A month or so ago I was lucky enough to get hold of a 50-year old copy of "The Big Show" by Pierre Clostermann, a Frenchman who flew Spitfires and Tempests with the RAF. Although the title doesn't really grab you, it's probably the best WW2 aviation book I've read - very honest and moving, along with all the good exciting flying stuff. Grab it if you can.