 A most competent tactician indeed, his decisions were influenced by the composition of his army, which included many untrustworthy troops from Magna Graecia.The battle of Sellasia was also peculiar, in reality being more of an assault against a static enemy, a fact that enabled Antigonus to effectively launch a series of separate attacks.In the Hellenistic period, development in science was incredibly noteworthy and that could not but reflect on siegecraft