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.

while theirs, on the other hand, they did not so easily discover, because, as they were victorious and not dispersed, they were better recognised by each other. So that if they fell in with any of the enemy with the advantage of numbers en their own side, the Syracusans escaped from them, inasmuch as they knew the Athenian watchword;

but if they themselves [in such a case] did not answer, they were put to the sword. But what especially and in the greatest degree hurt them, was the singing of their hymns; for as it was very similar on each side, it occasioned perplexity. For the Argives, the Corcyraeans, and all of the Dorian race that were with the Athenians, struck terror into them whenever they raised their paean;