History of the Peloponnesian War

The Lacedaemonians, on the other hand, when their war with the rebels on Ithome proved a long affair, appealed to their allies in general and especially to the Athenians, who came with a considerable force under the command of Cimon.

The principal reason why an appeal was made to them was that they were reputed to be skilful in siege operations, whereas the long continuance of the siege showed their own deficiency in this respect; for otherwise they would have taken the place by assault.