History of the Peloponnesian War

This same summer arrived at Athens thirteen hundred targeteers, Thracian swordsmen of the tribe of the Dii, who were to have sailed to Sicily with Demosthenes.

Since they had come too late, the Athenians determined to send them back to Thrace, whence they had come; to keep them for the Decelean war appearing too expensive, as the pay of each man was a drachma a day.

Indeed since Decelea had been first fortified by the whole Peloponnesian army during this summer, and then occupied for the annoyance of the country by the garrisons from the cities relieving each other at stated intervals, it had been doing great mischief to the Athenians; in fact this occupation, by the destruction of property and loss of men which resulted from it, was one of the principal causes of their ruin.

Previously the invasions were short, and did not prevent their enjoying their land during the rest of the time: the enemy was now permanently fixed in Attica; at one time it was an attack in force, at another it was the regular garrison overrunning the country and making forays for its subsistence, and the Lacedaemonian king, Agis, was in the field and diligently prosecuting the war; great mischief was therefore done to the Athenians.

They were deprived of their whole country: more than twenty thousand slaves had deserted, a great part of them artisans, and all their sheep and beasts of burden were lost; and as the cavalry rode out daily upon excursions to Decelea and to guard the country, their horses were either lamed by being constantly worked upon rocky ground, or wounded by the enemy.