The Macedonian Army was a military force that played a crucial role in the ancient world, particularly during the reign of Philip II and his son, Alexander the Great. Known for its innovative tactics and disciplined formations, the army utilized the famous phalanx formation, which allowed for effective combat against larger forces. The army was composed of various units, including heavy infantry known as hoplites and cavalry. Its success in battles, such as the Battle of Gaugamela, helped expand the Macedonian Empire across vast territories, influencing military strategies for generations to come.