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,
Spartan army peltasts became a much more common sight on the Greek battlefield and themselves became more heavily armed. In response to Iphicrates' victory over Sparta in 392 BC, Spartan hoplites started abandoning body armour and eventually wore almost no armour apart from a shield, leg greaves, bracelets, helmet and a robe. In later periods Spartans did start to readopt armour, but on a much lesser scale than during the Archaic period. Finally during 227 BC, Cleomenes' reforms introduced updated equipment to Sparta, including the Macedonian "sarissa" (pike). However pike-men armed with the "sarissa" never outnumbered troops equipped in the hoplite style.