EPIGONI (" descendants ")  , in Greek legend, the sons of the seven heroes who fought against Thebes (see ADRASTUS) . Ten years later, to avenge their fathers, the Epigoni undertook a second expedition, which was completely successful . Thebes was forced to surrender and razed to the ground . In early times the war of the Epigoni was a favourite subject of epic poetry . The term is also applied to the descendants of the Diadochi, the successors of Alexander the Great .