Playing a major role in Herodotus' Histories, he flaunted conventional strategy by informing the Persians of the Greek fleet's position, thus bringing the cumbersome Persian navy into an area where only Greek ships could maneuver.  
He began the tradition of the Delian League, a sort of Greek mafia, by demanding tribute of the Argives in return for protection.  Playing a major role in Herodotus' Histories, he flaunted conventional strategy by informing the Persians of the Greek fleet's position, thus bringing the cumbersome Persian navy into an area where only Greek ships could maneuver.  FTP name this Greek general who engineered the defeat of Xerxes at Salamis.
He began the tradition of the Delian League, a sort of Greek mafia, by demanding tribute of the Argives in return for protection.  
Themistocles