History of the Peloponnesian War

The weather was stormy and it was snowing a little, which encouraged him to hurry on, in order, if possible, to take every one at Amphipolis by surprise, except the party who were to betray it.

The plot was carried on by some natives of Argilus, an Andrian colony, residing in Amphipolis, where they had also other accomplices gained over by Perdiccas or the Chalcidians.

But the most active in the matter were the inhabitants of Argilus itself, which is close by, who had always been suspected by the Athenians, and had had designs on the place. These men now saw their opportunity arrive with Brasidas, and having for some time been in correspondence with their countrymen in Amphipolis for the betrayal of the town, at once received him into Argilus, and revolted from the Athenians, and that same night took him on to the bridge over the river;

where he found only a small guard to oppose him, the town being at some distance from the passage, and the walls not reaching down to it as at present. This guard he easily drove in, partly through there being treason in their ranks, partly from the stormy state of the weather and the suddenness of his attack, and so got across the bridge, and immediately became master of all the property outside; the Amphipolitans having houses all over the quarter.

The passage of Brasidas was a complete surprise to the people in the town; and the capture of many of those outside, and the flight of the rest within the wall, combined to produce great confusion among the citizens; especially as they did not trust one another.

It is even said that if Brasidas, instead of stopping to pillage, had advanced straight against the town, he would probably have taken it.

In fact, however, he established himself where he was and overran the country outside, and for the present remained inactive, vainly awaiting a demonstration on the part of his friends within.

Meanwhile the party opposed to the traitors proved numerous enough to prevent the gates being immediately thrown open, and in concert with Eucles, the general, who had come from Athens to defend the place, sent to the other commander in Thrace, Thucydides, son of Olorus, the author of this history, who was at the isle of Thasos, a Parian colony, half a day's sail from Amphipolis, to tell him to come to their relief.