In winter at Lampsacus, Alcibiades tries to organize the army into a single force, but his old soldiers do not want to mix with Thrasyllus's soldiers. (Xenophon, Hellenica 1.2.15)
When winter ends and spring comes, the whole Athenian army sails to Proconnesus (year 22 of the war, in the ephorate of Pantacles and the archonship of Antigenes). (Xenophon, Hellenica 1.3.1)
They set up camp near Chalcedon; the Chalcedonians have entrusted their property to the Thracians of Bithynia. (Xenophon, Hellenica 1.3.2)
Alcibiades makes a treaty with the Bithynians and blockades Chalcedon with a palisade. The Lacedaemonian governor Hippocrates sallies out and dies in battle. (Xenophon, Hellenica 1.3.4–1.3.6)
After Alcibiades takes Selymbria, he comes to Byzantium and gathers Thracian troops and some three hundred cavalry. (Xenophon, Hellenica 1.3.10)
The Athenian army encircles Byzantium with a palisade and attacks. The governor Clearchus crosses over to meet Pharnabazus. (Xenophon, Hellenica 1.3.14–1.3.15)
At night the traitors in Byzantium open the gate by the Thracian square to the Athenian army. Helixus and Koiratadas surrender and are sent to Athens. (Xenophon, Hellenica 1.3.20–1.3.22)