History of the Peloponnesian War
Thucydides
Thucydides. The history of the Peloponnesian War, Volume 1-2. Dale, Henry, translator. London: Heinemann and Henry G. Bohn, 1851-1852.
The Tyrrhenians (for it was they who were keeping guard at this point) seeing them coming on in disorder, advanced towards them, and fell upon and routed their van, and drove them into what was called the marsh of Lysimelea.