Siege of Motya

Exactly why Himilco agreed to peace is unknown; it is speculated that a plague outbreak in the Punic army may have been the reason. Dionysius, as future events would indicate, merely chose peace as an opportunity to gather strength and renew the war later.

The treaty secured the Carthaginian sphere of influence in western Sicily, and made the Elymians and Sicani part of Carthaginian sphere of influence. The Greek cities of Selinus, Akragas, Gela and Camarina (Greeks were allowed to return to these cities) became tributary to Carthage. Both Syracuse and Carthage pledged to respect the independence of the Sicels, Leontini and the city of Messana.[4]

Dionysius, who had obtained his power by condemning and executing his fellow Greek generals, faced discontent among the Greeks after he had evacuated both Gela and Camarina after the Battle of Gela in 405 BC. Some Syracusans tried to stage a coup in 405 BC, but Dionysius had managed to defeat the rebels through speedy action and enemy bungling.[5] After the treaty with Carthage was signed, Syracuse was hemmed in by the territories of Camarina and Leontini, the former a vassal of Carthage and the latter hostile to Syracuse, while the Syracusan rebels settled in the city of Aetna.[6]

Between 405 BC and 397 BC, Dionysius increased the might of Syracuse, dealt with attempts to overthrow him, and made Syracuse the best defended city in the whole Greek world. His activities, briefly, were as follows:

• Enhancing Syracusan defenses: Dionysius populated the island of Orytiga (where the old city of Syracuse stood) with loyal mercenaries and close supporters, and built a wall on the isthmus connecting it with the mainland. Two new forts were built, one on the isthmus and one on the far end of the Epipolae Plateau at Euryalos.[7] He incorporated the walls built during the Athenian Expedition into the city for settling the people in Achradina. Finally in 402 BC, Dionysius started building a wall that would enclose the whole Epipolae Plateau, which was completed by 399 BC.[8] Employing tens of thousands of workers working on different sections of the wall, with Dionysius working alongside and offering prizes to the best workers, the wall was speedily completed.[9] Syracuse became the best fortified city of the Greek world, and Dionysius ensured his own security by building a fortress manned by loyal supporters within the city walls.
• Enhancing combat effectiveness: Dionysius continuously increased the size of his army by hiring mercenaries and building new ships. Greek citizen soldiers normally supplied their own arms and armor, but Dionysius hired workmen from Italy, Greece and Africa to supply his soldiers with arms. Over 140,000 sets of arms, helmets and mails were made. By supplying soldiers with standard issue arms and opening recruitment to all social classes, Dionysius managed to increase the size of his army (prior to this, only mercenaries and citizens able to supply their own arms were the backbone of the army). These workmen also constructed catapults and quinqueremes, giving him a battlefield advantage for a while.[10] Dionysius also built 200 new warships, refitted 110 old ones, and also commissioned 160 transports. A secret harbour was created at Laccium covered with screens, which could house 60 triremes.[11]
• Expanding Syracuse's domain: Dionysius broke the peace treaty in 404 BC by attacking the Sicel city of Herbessus.[12] Carthage did nothing, but part of the Syracusan army joined the Syracusan rebels from Aetna, and with help from Messina and Rhegion, managed to besiege Dionysius in Syracuse. Dionysius thought about fleeing the beleaguered city, and only the bungling of the rebels and the help of some Italian mercenaries saved the day for him.[13] Between 403 and 398 BC, Dionysius destroyed the Ionian Greek cities of Catana, which was given to the Campanians, and Naxos, whose Greek citizens he sold into slavery, and gave the city to the Sicels. Lastly, he conquered Leontini, which surrendered without resistance. Dionysius also strengthened his ties with the Italian Greeks by marrying a Locrian lady.[14] His overtures of friendship with Rhegion fell on deaf ears, however. Carthage did nothing to stop these violations of the peace treaty, namely the attacks on the Sicels and the conquest of Leontini.

In 398 BC, Dionysius sent an embassy to Carthage to declare war unless they agreed to give up all the Greek cities under their control. Before the embassy returned from Carthage, Dionysius let loose his mercenaries on Carthaginians living in Syracusan lands, putting them to the sword and plundering their property. Then he set out for Motya with his army, accompanied by 200 warships and 500 transports carrying supplies and war machines.[15]

A generic representation, not to exact scale, geographic features partially shown.

The Phoenician city of Motya was situated on a small island in the middle of a mostly shallow lagoon. It was surrounded by a wall which included at least 20 watch towers, and the walls often rose from the water's edge to a height 8 to 9 metres (26 to 30 ft) and thickness of 6 metres (20 ft). Lack of space had compelled the citizens to construct houses often six floors high, which often towered over the walls. It seemed that Motya had no standing navy,[20] and may have had a Carthaginian garrison stationed in the city. The island was connected to the mainland by a mole 1,500 metres (4,900 ft) long and 10 metres (33 ft) wide on the northern side of the island, with a gate flanked by two towers on the island end. A mixed population of Phoenicians and Greeks lived inside the city. The citizens cut up the mole and prepared for a siege before the Greeks arrived to start the blockade.[21]

Little is known of the activities of Carthage during 405–397 BC except that a plague had swept through Africa, which had been carried by the returning army in 405 BC, weakening Carthage. Himilco was again given the task of responding to the threat. While raising a mercenary army (Carthage did not maintain a standing army) Himilco sent ten triremes to raid Syracuse itself. The raiders entered the Great Harbour of Syracuse and destroyed all the ships they could find. Lacking an army, Himilco was unable to pull off a feat similar to the one Scipio African accomplished at Carthago Nova in 209 BC: attack an almost undefended city while the main army was away and capture it.[22]

Himilco next manned 100 triremes with picked crews and sailed to Selinus in Sicily, arriving at night. From there, the Punic navy sailed to Motya the following day and fell on the transports beached near Lilybaeum, destroying all that lay at anchor. Then the Carthaginian fleet moved into the area between Motya and the peninsula to the west of the lagoon, trapping the beached Greek fleet on the northern shallows of the lagoon.[18]

Naval battle of Motya 398 BC. A generic representation of a possible scenario, not to exact scale and path of troop movements are indicative and geographic features partially shown because of lack of primary source data.

In 405 BC, the Spartan navy under Lysander had managed to capture the majority of the Athenian navy in the Battle of Aegospotami while it lay at anchor. It is unknown why Himilco chose to go after the transports instead of attacking the beached Greek warships to the north of Motya. The loss of the war fleet would have forced Dionysius to lift the siege, giving Himilco a chance to carry the war to Syracuse.[23]

Himilco, however, had managed to put the Syracusan navy in a similar position the Persians were in at the Battle of Salamis: while the Carthaginian ships had room to maneuver, the Greeks did not, which nullified the numerical superiority and heavier Greek ships (the Greeks had quinqueremes, the Carthaginians did not). Had Dionysius sent ships south to meet the Carthaginians, the depth of the lagoon would mean a small number of his ships would have emerged to the south of Motya to face the entire Carthaginian fleet. Himilco would then have the advantage of numbers and room to maneuver and could destroy the Greek ships in detail.

Dionysius in response launched his ships with a great number of archers and slingers and supported them with his land-based catapults. While these dueled with the archers and slingers on board the Carthaginian triremes, taking a heavy toll and preventing Himilco from reaching the beached ships, Dionysius hatched a scheme. He had his men construct a road of wooden planks on the northern isthmus, on which 80 triremes were then hauled to the open sea to the north of the isthmus. Once properly manned, these ships sailed south along the peninsula. The Carthaginian fleet now facing encirclement, Himilco chose not to fight a two-front battle against superior numbers, and sailed away to Carthage.[24] He had accomplished little except making a sizable dent in Syracusan shipping.

Forcing holes in the wall itself was only the first step in reducing the city. As the Greek troops advanced, the Phoenicians launched a storm of projectiles (arrows, stones) from the rooftops and houses and took a heavy toll on the attackers. The Greeks next pushed the siege towers next to the houses closest to the walls and sent troops on the roofs using gangways, who forced their way into the houses. A fierce hand-to-hand struggle began, the desperate resistance of the Phoenicians (who expected no mercy from the Greeks) taking a heavy toll on the attackers.

For several days, the grim contest continued within the beleaguered city from dawn to dusk. Unable to gain anything in this slugging contest, Dionysius decided to change tactics. The battle usually started at daybreak and continued until nightfall, when the Greeks withdrew to rest. One day, Dionysius sent a picked group of mercenaries under a Thurian named Archylus at night with ladders to secure vantage points. Under cover of darkness, this commando detachment managed to take hold of the positions before the Phoenicians discovered what was going on.[26] Thus the Greeks gained the advantage, and now the weight of numbers was enough to overcome all resistance. Dionysius had intended to secure as many prisoners as possible for the slave market, but the Greeks vented their frustrations by indiscriminate killing of the population. Dionysius could only save those who sought refuge in the temples.