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.
To assist their centre was neither in the power of Thrasybulu on the right, owing to the superior number of ships that were pressing on him, nor of Thrasylus on the left; for it was con cealed from him by the headland of Cynossema, and, moreover. the Syracusans and the rest who were opposed to him with no inferior numbers prevented his doing it: until the Peloponnesians, from pursuing, in the security of victory, different vessels in different directions, began to fall into greater disorder in one part of their force.
Thrasybulus therefore, observing this, ceased now from extending the flank, and facing about immediately attacked and routed the ships opposed to him; and then proceeding to those on the victorious part of the enemy's line, handled them roughly in their scattered condition, and threw most of them into a panic without striking a blow. The Syracusans also had by this time yielded the victory to Thrasylus, and taken to flight more decidedly, when they saw the rest doing so likewise.