History of the Peloponnesian War

But when, besides the ravages from Pylos, which went on without any intermission, the thirty Athenian ships came out from Argos and wasted part of Epidaurus, Prasiae, and other places; when upon every dispute that arose as to the interpretation of any doubtful point in the treaty, their own offers of arbitration were always rejected by the Athenians,—the Lacedaemonians at length decided that Athens had now committed the very same offence as they had before done, and had become the guilty party; and they began to be full of ardor for the war.

They spent this winter in sending round to their allies for iron, and in getting ready the other implements for building their fort; and meanwhile began raising at home, and also by forced requisitions in the rest of Peloponnese, a force to be sent out in the merchantmen to their allies in Sicily. Winter thus ended, and with it the eighteenth year of this war of which Thucydides is the historian.

In the first days of the spring following, at an earlier period than usual, the Lacedaemonians and their allies invaded Attica, under the command of Agis, son of Archidamus, king of the Lacedaemonians. They began by devastating the parts bordering upon the plain, and next proceeded to fortify Decelea, dividing the work among the different cities.

Decelea is about thirteen or fourteen miles from the city of Athens, and the same distance or not much further from Boeotia; and the fort was meant to annoy the plain and the richest parts of the country, being in sight of Athens.

While the Peloponnesians and their allies in Attica were engaged in the work of fortification, their countrymen at home sent off, at about the same time, the heavy infantry in the merchant vessels to Sicily; the Lacedaemonians furnishing a picked force of Helots and Neodamodes ‘or freedmen), six hundred heavy infantry in all, under the command of Eccritus, a Spartan; and the Boeotians three hundred heavy infantry, commanded by two Thebans, Xenon and Nicon, and by Hegesander, a Thespian.