Book excerpt: Unlike any conflict before or since, World War II was a truly worldwide war, with dozens of nations participating in significant battles in virtually every corner of the globe. In this definitive guide, military analyst James F. Dunnigan chooses fifty titles out of the many thousands of books published on the subject as being the most worthy of a place in your library. He includes incisive commentary on such important volumes as General George S. Patton Jr.'s classic tome War As I Knew It -- a personal and brutally honest narrative of the famed leader's march across Western Europe -- and Studs Terkel's acclaimed oral history A Good War, with its riveting day-to-day accounts of the fighting men of many nations.