The Hellenistic Army emerged after the conquests of Alexander the Great, around the 4th century BCE. It was characterized by a blend of Greek military tactics and the incorporation of various cultures from the territories conquered by Alexander. This army typically included heavy infantry known as phalanx, light infantry, cavalry, and specialized units, allowing for versatile battlefield strategies. During the Hellenistic period, armies were often larger and more diverse than their predecessors. They utilized advanced siege techniques and adopted new technologies, such as the catapult. The Hellenistic Army played a crucial role in the expansion of Hellenistic kingdoms and the spread of Greek culture across the Mediterranean and Near East.