334 BC Year 334 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Consulship of Caudinus and Calvinus. The denomination 334 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Darius III Darius III, originally named Artashata and called Codomannus by the Greeks, was the last king of the Achaemenid Empire of Persia, from 336 BC to 330 BC. Artashata adopted Darius as a dynastic name. 333 BC Year 333 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Dictatorship of Rufinus. The denomination 333 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years. Battle of Issus The Battle of Issus occurred in southern Anatolia, on November 5, 333 BC between the Hellenic League led by Alexander the Great and the Achaemenid Empire, led by Darius III, in the second great battle of Alexander's conquest of Asia. The invading Macedonian troops defeated Persia. After the Hellenic League soundly defeated the Persian satraps of Asia Minor at the Battle of the Granicus, Darius took personal command of his army. He gathered reinforcements and led his men in a surprise march behind the Hellenic advance to cut their line of supply. This forced Alexander to countermarch, setting the stage for the battle near the mouth of the Pinarus River and the town of Issus. Battle of Gaugamela The Battle of Gaugamela, also called the Battle of Arbela, was the decisive battle of Alexander the Great's invasion of the Persian Achaemenid Empire. In 331 BC Alexander's army of the Hellenic League met the Persian army of Darius III near Gaugamela, close to the modern city of Dohuk in Iraqi Kurdistan. Though heavily outnumbered, Alexander emerged victorious due to his army's superior tactics and his deft employment of light infantry. It was a decisive victory for the Hellenic League and led to the fall of the Achaemenid Empire. Antipater Antipater was a Greek Macedonian general and statesman under kings Philip II of Macedon and Alexander the Great, and father of King Cassander. In 320 BC, he became regent of all of Alexander the Great's Empire. Wars of Alexander the Great The wars of Alexander the Great were fought by King Alexander III of Macedon, first against the Achaemenid Persian Empire under Darius III, and then against local chieftains and warlords as far east as Punjab, India. By the time of his death, he had conquered most of the world known to the ancient Greeks. However, he failed to conquer South Asia. Although being successful as a military commander, he failed to provide any stable alternative to the Achaemenid Empire—his untimely death threw the vast territories he conquered into civil war. Cleomenes III Cleomenes III was one of the two kings of Sparta from 235 to 222 BC. He was a member of the Agiad dynasty and succeeded his father, Leonidas II. He is known for his attempts to reform the Spartan state. Battle of Megalopolis The Battle of Megalopolis was fought in 331 BC between Spartan led forces and Macedonia. Alexander's regent Antipater led the Macedonians to victory over King Agis III.