A New History of the Peloponnesian War is an ebook-only omnibus edition that includes all four volumes of Donald Kagan's acclaimed account of the war between Athens and Sparta (431–404 B.C.): The Outbreak of the Peloponnesian War, The Archidamian War, The Peace of Nicias and the Sicilian Expedition, and The Fall of the Athenian Empire. Reviewing the four-volume set in The New Yorker, George Steiner wrote, "The temptation to acclaim Kagan's four volumes as the foremost work of history produced in North America in the twentieth century is vivid. . . . Here is an achievement that not only honors the criteria of dispassion and of unstinting scruple which mark the best of modern historicism but honors its readers."

All four volumes are also sold separately as both print books and ebooks.