History of the Peloponnesian War

On the following day he led out the main body of his army, and drawing them up in order of battle before the walls of the Athenians to prevent their going to the relief of any other quarter, despatched a strong force against Fort Labdalum and took it, and put all whom he found in it to the sword, the place not being within sight of the Athenians.

On the same day an Athenian galley that lay moored off the harbor was captured by the Syracusans.

After this the Syracusans and their allies began to carry a single wall, starting from the city, in a slanting direction up Epipolae, in order that the Athenians, unless they could hinder the work, might be no longer able to invest them.