The newly united Athenian army did, however, succeed in retaking Chalcedon, Byzantium, and other cities in the Hellespont in the summer of 408 BC; Thrasyllus commanded detachments in several operations during this period.
Namun pasukan Athena yang baru bersatu berhasil merebut kembali Kalsedon, Byzantium, dan kota-kota lain di Hellespont pada musim panas tahun 408 SM; Thrasyllos memerintahkan detasemen dalam beberapa operasi selama periode ini.