The Macedonian army was a powerful military force in ancient Greece, particularly during the reign of King Philip II and his son, Alexander the Great. Known for its innovative tactics and disciplined formations, the army primarily utilized the phalanx formation, which allowed soldiers to fight effectively in close ranks with long spears called sarissas. The army played a crucial role in expanding the Macedonian Empire across vast territories, including parts of Asia and Egypt. Its success was attributed to strong leadership, strategic planning, and the integration of various units, such as cavalry and infantry, which enhanced its combat effectiveness on the battlefield.