Initial actions taken against Persia in the…
476 BCE
Initial actions taken against Persia in the first years of the Delian League's existence are scattered.
Eion on the Strymon, an economically and strategically important site in Thrace, is still held by a Persian commander.
In the first act of the league recorded by Thucydides, Cimon undertakes Athens' successful capture of Eion, also in 476, an act perfectly in keeping with the league's ostensibly Panhellenic or anti-Persian program.
However, the natives will soon destroy an Athenian settlement (cleruchy) sent to that district.