History of the Peloponnesian War

Afterwards, the Athenians left a part of their own troops and the allies, to keep guard both by land and sea, and returned with the main body of the forces. Those who were left behind remained and besieged the place.

About the same time an Argive force invaded the Phliasian territory, and being intercepted by an ambuscade of the Phliasians and their allies, were cut off to the number of eighty.