The tension between the groups was eventually dissolved after the Athenians launched an attack on Abydos, in which Thrasyllus commanded thirty ships; the Athenians defeated a Persian army in battle, but could not take the city.
Ketegangan antara kelompok-kelompok itu akhirnya dibubarkan setelah pasukan Athena meluncurkan serangan terhadap Abydos, di mana Thrasyllos memerintahkan tiga puluh kapal; orang Atena mengalahkan tentara Persia dalam pertempuran, tetapi tidak dapat merebut kota.