 Mindarus was forced to flee to a nearby beach, and vicious fighting ensued on land as the Athenians attempted to drag off the Spartan ships.Thrasybulus and Alcibiades kept the Spartans occupied while Theramenes joined up with the nearby Athenian land forces and then hurried to the rescue; his arrival precipitated a total Athenian victory, in which all the Spartan ships were captured.In the wake of this victory, the Athenians captured Cyzicus and constructed a fort at Chrysopolis, from which they extracted a customs duty of one tenth on all ships passing through the Bosporus.