Sunium
Chapter 21 (3 references)
Besides, the transport of provisions from Euboea, which had before been carried on so much more quickly overland by Decelea from Oropus, was now effected at great cost by sea round Sunium; everything the city required had to be imported from abroad, and instead of a city it became a fortress. Summer and winter the Athenians were worn out by having to keep guard on the fortifications, during the day by turns, by night all together, the cavalry excepted, at the different military posts or upon the wall. But what most oppressed them was that they had two wars at once, and had thus reached a pitch of frenzy which no one would have believed possible if he had heard of it before it had come to pass. For could any one have imagined that even when besieged by the Peloponnesians entrenched in Attica, they would still, instead of withdrawing from Sicily, stay on there besieging in like manner Syracuse, a town (taken as a town) in no way inferior to Athens, or would so thoroughly upset the Hellenic estimate of their strength and audacity, as to give the spectacle of a people which, at the beginning of the war, some thought might hold out one year, some two, none more than three, if the Peloponnesians invaded their country, now seventeen years after the first invasion, after having already suffered from all the evils of war, going to Sicily and undertaking a new war nothing inferior to that which they already had with the Peloponnesians? These causes, the great losses from Decelea, and the other heavy charges that fell upon them, produced their financial embarrassment; and it was at this time that they imposed upon their subjects, instead of the tribute, the tax of a twentieth upon all imports and exports by sea, which they thought would bring them in more money; their expenditure being now not the same as at first, but having grown with the war while their revenues decayed.
Chapter 24 (3 references)
In the meantime the Athenians were not idle. During this same winter, as they had determined, they contributed timber and pushed on their ship-building, and fortified Sunium to enable their corn-ships to round it in safety, and evacuated the fort in Laconia which they had built on their way to Sicily; while they also, for economy, cut down any other expenses that seemed unnecessary, and above all kept a careful look-out against the revolt of their confederates.
Chapter 26 (3 references)
Meanwhile the Peloponnesian vessels sailed by, and rounding Sunium anchored between Thoricus and Prasiae, and afterwards arrived at Oropus. The Athenians, with revolution in the city, and unwilling to lose a moment in going to the relief of their most important possession (for Euboea was everything to them now that they were shut out from Attica), were compelled to put to sea in haste and with untrained crews, and sent Thymochares with some vessels to Eretria. These upon their arrival, with the ships already in Euboea, made up a total of thirty-six vessels, and were immediately forced to engage. For Agesandridas, after his crews had dined, put out from Oropus, which is about seven miles from Eretria by sea; and the Athenians, seeing him sailing up, immediately began to man their vessels. The sailors, however, instead of being by their ships, as they supposed, were gone away to purchase provisions for their dinner in the houses in the outskirts of the town; the Eretrians having so arranged that there should be nothing on sale in the marketplace, in order that the Athenians might be a long time in manning their ships, and, the enemy's attack taking them by surprise, might be compelled to put to sea just as they were. A signal also was raised in Eretria to give them notice in Oropus when to put to sea. The Athenians, forced to put out so poorly prepared, engaged off the harbour of Eretria, and after holding their own for some little while notwithstanding, were at length put to flight and chased to the shore. Such of their number as took refuge in Eretria, which they presumed to be friendly to them, found their fate in that city, being butchered by the inhabitants; while those who fled to the Athenian fort in the Eretrian territory, and the vessels which got to Chalcis, were saved. The Peloponnesians, after taking twenty-two Athenian ships, and killing or making prisoners of the crews, set up a trophy, and not long afterwards effected the revolt of the whole of Euboea (except Oreus, which was held by the Athenians themselves), and made a general settlement of the affairs of the island.