But everything went wrong. An attempt to recover Epipolae was repulsed with great loss, and when Demosthenes and Eurymedon therefore wished to take the whole force home, Nicias refused on the ground that the people would resent it. Yet they would probably have prevailed had it not been for an eclipse of the moon, after which the seers forbade any movement for a month, and Nicias was firm in refusing to disobey the warning. The result was that the Syracusans again attacked them by land and sea. The land attack was repulsed, but the defeat of the fleet was so complete that all idea of any further offensive movement had to be abandoned. The best they could hope would be to escape in safety. But the Syracusans blocked the mouth of the Great Harbour, and therefore escape could only be effected by a naval success in the harbour itself. Eurymedon had fallen in the previous engagement, but Demosthenes now took command at sea, while Nicias, who was displaying great energy, remained with the land forces, to protect those crews which were forced ashore. The fight was long and desperate, but in the end the Athenian ships were disastrously defeated; such of them as were not captured or sunk were run ashore near the Athenian camp into which the crews fled for safety.
Nothing now remained but to retreat by land into the centre of the island where friendly Sicels might aid or protect them. But even now their evil destiny pursued them. Instead of retreating at once, as was the first impulse of Nicias and Demosthenes, they were induced by a cunning message of Hermocrates,
