In 411/10 BC Antandrus expelled its Persian garrison with the help of Peloponnesian troops who were stationed at Abydos on the Hellespont. Having briefly won its freedom, it quickly returned to Persian control, and in 409 BC the Pharnabazus constructed a fleet for the Peloponnesians here using the abundant timber of Mount Ida. We do not know how the Persians regained Antandrus, but in 409 BC the Syracusans gained the Antandrians' friendship by helping to rebuild their fortifications, suggesting that a siege had taken place in the previous year. In the summer of 399 BC Xenophon's Ten Thousand passed through on their way home from Persia, and he later wrote in his Hellenica of the city's continuing strategic importance during the Corinthian War (395-387 BC).