The Aetolian campaign, often referred to as "Demosthenes' Aetolian campaign", was a failed Athenian offensive in northwestern Greece during the Archidamian War. In 426 BCE, Demosthenes was dispatched from Athens to the Corinthian Gulf in command of a fleet of 30 ships. Arriving in the northwest, he quickly assembled a coalition force from Athens' allies in the region and besieging the city of Leucas. Before that siege reached a conclusion, however, he was persuaded to abandon it in favor of an attack on the tribal region of Aetolia. Leaving Leucas, he set out towards Aetolia, losing along the way several major contingents from his army, whose leaders were apparently unhappy with his change in strategy.