While the governments of Syracuse and Akragas took only preventive measures,
Hermocrates, an exiled general of Syracuse, sought to take a more aggressive stance on the issue of Carthaginian aggression, hoping that his actions would enable him to return to Syracuse and assume a political position. He hired 2,000 mercenaries (1,000 of them former citizens of Himera) and five ships and then set up a base in the ruins of Selinus, building a wall for security around the acropolis. His force ultimately swelled to 6,000 men, (many former citizens of Selinus had joined him) and Hermocrates started to raid Punic territories at his discretion. He first defeated the men of
Motya, then ravaged their land. His next target was the territory of "Golden Shell", the land around
Panormus. In 407 BCE, the Greeks defeated the citizens of Panormus (killing 500 of them) and plundered at will, retiring to Selinus with their spoils. These activities gained Hermocrates fame and sympathy with Sicilian Greeks, but no recall from Syracuse. Hermocrates then collected the bones of the Greek dead left unburied at Himera and sent them over to Syracuse for burial, an act that further enhanced his reputation among the Greeks (and brought about the downfall of Diocles, the Syracusan leader defeated at Himera and who had actually left the bones unburied) but did not end his exile from Syracuse. The general finally tried to stage a coup in Syracuse, where he died in a street fight. Syracuse and Akragas did not neglect their defences during the activities of Hermocrates. Akragas, expecting to be the first target of any Carthaginian retaliation, set about expanding its army while Syracuse started to expand its fleet. The walls of both the cities were also kept in repair.
Greek preparations Syracuse and Akragas took speedy action to prepare for the expected Punic response after the downfall of Hermocrates. Syracuse appealed to the cities of
Magna Graecia and even
Sparta for help, while a general named Daphnaeus was elected to lead the Syracusan war effort. An officer named Dionysius, who had been a cohort of the fallen Hermocrates, was also elected as part of the army command staff. The Greeks started gathering an army at Syracuse which included Greeks from
Camarina,
Gela,
Messene, and Italy in addition to mercenaries, but Sparta was unable to send aid at this time. Akragas hired the Spartan general Dexippus with a band of 1,500
hoplites and some Campanian mercenaries (previously serving under Hannibal Mago at Himera) to augment their force of 10,000 troops. Syracuse posted a fleet of forty triremes at
Eryx to watch for the movement of the Punic navy.
Carthage makes ready The Carthaginian Senate had offered the command of the coming expedition to Hannibal Mago (the “Greek Hater”), who at first refused the position pleading advanced age. When his kinsman Himilco was appointed as his deputy, Hannibal set about making preparations in earnest. Aside from Carthaginian citizens, troops were levied from Africa, Spain, and Italy, so an army of 120,000 men (probably exaggerated; around 60,000 is closer to the truth) and a fleet of 120
triremes and 1,000 transports were made ready by the Spring of 406 BCE. Carthage doubled the numbers of triremes (only 60 triremes had escorted the expeditions of 480 and 409) because the Syracusan navy had returned from mainland Greece, posing a severe threat to the Carthaginian expedition. Hannibal, before sailing with the main fleet, sent 40 triremes to Sicily, where these ships met the Greek fleet stationed at Eryx and lost fifteen of their number in a skirmish. The main Punic fleet then set sail, led by a vanguard of 50 triremes, while the rest sailed with the main fleet. The outnumbered Greek ships now gave way and the Punic expedition safely landed near Motya. ==Nature of opposing forces==