Πελοποννησιακός Πόλεμος
History of the Peloponnesian War

The History of the Peloponnesian War is a historical account of the Peloponnesian War, which was fought between the Peloponnesian League and the Delian League. The account, apparently unfinished, does not cover the full war, ending mid-sentence in 411. It was written by Thucydides, an Athenian historian who also served as an Athenian general during the war. His account of the conflict is widely considered to be a classic and regarded as one of the earliest scholarly works of history. The History is divided into eight books.— Wikipedia
Translations

History of the Peloponnesian War, Volume III
tr. Charles Forster Smith · Harvard University Press · United States · 1921

History of the Peloponnesian War, Volume I
tr. Charles Forster Smith · Harvard University Press · United States · 1921

History of the Peloponnesian War, Volume IV
tr. Charles Forster Smith · Harvard University Press · United States · 1921

