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.

whose own they did not so readily discover, as the Syracusans were victorious and not scattered, and thus less easily mistaken. The result was that if the Athenians fell in with a party of the enemy that was weaker than they, it escaped them through knowing their watchword; while if they themselves failed to answer they were put to the sword.

But what hurt them as much, or indeed more than anything else, was the singing of the Paean, from the perplexity which it caused by being nearly the same on either side: the Argives and Corcyraeans and any other Dorian peoples in the army, struck terror into the Athenians whenever they raised their Paean, no less than did the enemy.