The empire known for its military innovations and conquest strategies in ancient times is the Macedonian Empire, founded by Philip II and expanded by his son, Alexander the Great. The Macedonian military was noted for its use of the phalanx formation, combined arms tactics, and highly trained cavalry. Under Alexander, the empire achieved unprecedented territorial expansion, conquering vast regions from Greece to India. The strategic use of logistics, speed, and psychological warfare played a crucial role in their military successes. Alexander's campaigns spread Hellenistic culture and ideas, influencing the regions he conquered for centuries to come.