History of the Peloponnesian War

The same summer the Syracusans learned that the Athenians had been joined by their cavalry, and were on the point of marching against them; and seeing that without becoming masters of Epipolae, a precipitous spot situated exactly over the town, the Athenians could not, even if victorious in battle, easily invest them, they determined to guard its approaches, in order that the enemy might not ascend unobserved by this, the sole way by which ascent was possible,

as the remainder is lofty ground, and falls right down to the city, and can all be seen from inside; and as it lies above the rest the place is called by the Syracusans Epipolae or Overtown.

They accordingly went out in mass at daybreak into the meadow along the river Anapus, their new generals, Hermocrates and his colleagues, having just come into office, and held a review of their heavy infantry, from whom they first selected a picked body of six hundred, under the command of Diomilus, an exile from Andros, to guard Epipolae, and to be ready to muster at a moment's notice to help wherever help should be required.

Meanwhile the Athenians, the very same morning, were holding a review, having already made land unobserved with all the armament from Catana, opposite a place called Leon, not much more than half a mile from Epipolae, where they disembarked their army, bringing the fleet to anchor at Thapsus, a peninsula running out into the sea, with a narrow isthmus, and not far from the city of Syracuse either by land or water.

While the naval force of the Athenians threw a stockade across the isthmus and remained quiet at Thapsus, the land army immediately went on at a run to Epipolae, and succeeded in getting up by Euryelus before the Syracusans perceived them, or could come up from the meadow and the review.