History of the Peloponnesian War
Thucydides
Thucydides. History of the Peloponnesian War. Crawley, Richard, translator. London and Toronto: J. M. Dent and Sons Ltd.; New York: E. P. Dutton and Co., 1914.
The Tyrrhenians who guarded this point for the Athenians seeing them come on in disorder, advanced out against them and attacked and routed their van, hurling it into the marsh of Lysimeleia.