 In the wake of Athens' surrender, the long walls were torn down and the troops besieging the city returned to their various homes; a Spartan garrison probably remained in Athens to supervise the dismantling of the walls; Lysander sailed off to Samos to complete the siege of that city.Another clause of the treaty that had ended the war had allowed all exiles to return to Athens, and these men, many of them oligarchic agitators who had been cast out by the democracy, were hard at work in the months after the treaty.Five "overseers" were appointed by the members of the oligarchic social clubs to plan the transition to an oligarchy.