Where does History of the Peloponnesian War end?

The History of the Peloponnesian War, written by the Greek historian Thucydides, does not cover the entire conflict. Although the war itself lasted until 404 BCE, Thucydides' work ends abruptly in the middle of events occurring in the autumn of 411 BCE, more than six and a half years before the war's conclusion.1

The History is divided into eight books, and it is widely accepted that no further sections were published during the author's lifetime. Because Thucydides did not complete a connected account of the final years of the war, later historians such as Xenophon and Theopompus began their own historical works at the point where his narrative left off.12