Ancient Greek warfare enemy, making frontal assaults much more difficult. It also allowed a higher proportion of the soldiers to be actively engaged in combat at a given time (rather than just those in the front rank). The phalanx formed the core of ancient Greek militaries. Because hoplites were all protected by their own shield and others’ shields and spears, they were relatively safe as long as the formation didn't break. When advancing towards an enemy, the phalanx would break into a run that was sufficient to create momentum but not too much as to lose cohesion. The opposing sides would collide viciously,
Battle of Gela (405 BC) while smaller ones like Himera and Messana mustered between 3,000–6,000 soldiers. Gela probably could field similar numbers. Dionysius brought 30,000 foot and 1,000 horsemen, recruited from Syracuse, allied Sicilian Greek cities, and mercenaries along with 50 triremes to Gela in 405. The mainstay of the Greek army was the hoplite, drawn mainly from the citizens by Dionysius, and had a large number of mercenaries from Italy and Greece as well. Sicels and other native Sicilians also served in the army as hoplites and also supplied peltasts, and a number of Campanians, probably equipped like Samnite or Etruscan warriors, were present