History of the Peloponnesian War

On hearing these things the soldiers at first rushed upon those who had been the chief promoters of the oligarchy, and such of the others as had had a hand in it, to stone them; afterwards, however, when restrained by those who took a neutral position and admonished by them not to ruin their cause when the enemy's ships were lying so near in hostile array, they desisted.

After this, Thrasybulus son of Lycus and Thrasyllus, who had been the chief leaders in the revolution, being now openly in favour of changing the government at Samos to a democracy, bound all the soldiers by the most solemn oaths, and particularly those who were of the oligarchical faction, that they would in very truth maintain a democracy and live in harmony, would zealously prosecute the war with the Peloponnesians, and would be foes to the Four Hundred and would make to them no overtures for peace.

The same oath was also taken by all the Samians who were of military age, and in all they did and in whatever might result from the risks they ran the soldiers made common cause with the Samians, being convinced that neither for these nor for themselves was there any haven of safety, but that, should either the Four Hundred prevail or the enemy stationed at Miletus, they were doomed to utter destruction.