World War II novels
Norman Mailer's death will get a lot of people reading or rereading The Naked and the Dead, which is good. An even better novel from that war is James Jones' Thin Red Line. Jones is probably best known (if known at all) as the author whose book was the basis of From Here To Eternity. You might start there if you want to read his novels about the war in order.
And speaking of great books that were made into movies, one of the best fiction editors I've ever worked with manages to recommend Guns of Navarone every time I see him. That's Alistair MacClean's great book - a lot more suspenseful than the others . . . unless of course you've already seen the movie.
But it's worth reading even if you have. Same with the others.