My favorite so far is Stephen Ambrose's "Band of Brothers, E Company, 506th Regiment, 101st Airborne: From Normandy to Hitler's Eagle's Nest". The book was, of course, later turned into a miniseries and can now be seen on DVD (and which do an excellent job of capturing the spirit of the book).
A gripping story of a group of guys caught up in events that make the tales of Ulysses seem small in comparson. Griping reading, and true! I read it this spring just before going to Normandy and it prepared me about as well as anything save the first half hour of Tom Hanks' film, "Saving Private Ryan" (Two of Ryan's brothers lie in the American Cemetery in Normandy)