History of the Peloponnesian War

Meanwhile the Athenians, simultaneously with the fortification of Deceleia and at the very beginning of spring, sent thirty ships round the Peloponnesus under the command of Charicles son of Apollodorus, whose orders were on reaching Argos to summon to the ships Argive hoplites, in accordance with the terms of their alliance.

And they also were setting Demosthenes on his way to Sicily, as they had planned to do, with fifty Athenian ships and five Chian, twelve hundred Athenian hoplites from the muster-roll, and as many islanders as it was possible to get into their service from each place; and from their other allies who were subjects they collected whatever these had anywhere that was serviceable for the war. But Demosthenes had received instructions first of all, as he was sailing round, to co-operate with Charicles in his operations on the coast of Laconia.

So he sailed to Aegina and waited there for any part of the armament that had been left behind, and also until Charicles should take on board the Argive hoplites.