 As a result, the Spartans began to question Cnemus' leadership and sent several advisers to assist him in his command.Cnemus' earliest recorded military operation during the Archidamian War occurred in the summer of 430 BC, at the island of Zacynthus.Because Zacynthus was populated by Achaeans who had allied themselves with Athens, Cnemus led an expedition, made up of Spartans and their allies, against the island.