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Antigonus I Monophthalmus

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Antigonus I Monophthalmus was a prominent Macedonian Greek general.

Antigonus Monophthalmus Bust
Antigonus Monophthalmus Bust

He lived from approximately 382 BC to 301 BC. His nickname, "the One-Eyed," comes from a specific injury. The historian Plutarch recorded that a catapult bolt struck him in the eye. This happened during the Siege of Perinthus in 340 BC. Antigonus was a member of the Macedonian nobility. He likely served under King Philip II of Macedon. He also became a high-ranking leader in the army of Alexander the Great.

Antigonus held significant military responsibilities during Alexander's Persian campaigns. In 334 BC, he commanded the allied Greek infantry. This was a large division of the invasion army. Alexander appointed him as the satrap of Phrygia. A satrap was a governor of a specific province. His primary duty was protecting Alexander's lines of supply and communication. He successfully defended these lines against Persian forces. He won three separate battles to defeat Persian counter-attacks in Asia Minor. After the Battle of Issus, he succeeded Atizyes as the satrap of Greater Phrygia.

When Alexander the Great died in 323 BC, the empire faced a massive change. The Partition of Babylon was the process used to divide the provinces. Antigonus was granted authority over Phrygia, Lycaonia, Pamphylia, Lycia, and western Pisidia. However, he soon faced conflict with Perdiccas. Perdiccas was the regent, or the person acting on behalf of the empire. Antigonus refused to help Eumenes gain control of Cappadocia and Paphlagonia. Perdiccas viewed this refusal as a direct affront to his authority. Antigonus was forced to flee to Greece with his son, Demetrius.

In Greece, Antigonus formed strategic alliances to protect his interests. He joined a coalition with Antipater and Ptolemy. This period involved the First War of the Diadochi. The Diadochi were the successors of Alexander the Great. In 320 BC, Perdiccas was murdered by his own officers. Following this, Antipater became the new regent. At a meeting in Triparadisus, Antigonus was named Strategos of Asia. This role gave him command over a significant part of the Royal Army. He used this power to fight against the former supporters of Perdiccas.

Antigonus engaged in several intense military campaigns against rival generals. He fought Eumenes, a leader who had been swayed by the regent Polyperchon. Antigonus used bold and aggressive strategies to win. He defeated Eumenes at the Battle of Orkynia. He also won a surprise victory at the Battle of Cretopolis. Later, Antigonus fought Cleitus the White near the Hellespont. He launched a double assault by land and sea. This successful maneuver resulted in the capture or death of Cleitus's entire force. These victories helped Antigonus expand his influence across the region.

At the height of his power, Antigonus was the most dominant of the Diadochi. He ruled over Greece, Asia Minor, Syria, Phoenicia, and northern Mesopotamia. In 306 BC, he officially assumed the title of basileus, which means king.

Diadoch
Diadoch

He founded the Antigonid dynasty. This royal family line ruled Macedonia for many decades. They remained in power until the Roman Republic conquered the region in 168 BC. His rise to power changed the political map of the ancient Mediterranean world.

His massive empire eventually drew the attention of a powerful coalition. Leaders such as Cassander, Seleucus, Ptolemy, and Lysimachus united against him. They sought to stop his growing dominance. This rivalry led to the Battle of Ipsus in 301 BC. This battle was a decisive turning point in history. Antigonus was defeated and died shortly after the conflict. His vast territories were divided between Lysimachus and Seleucus. Although his reign ended, his son Demetrius survived the struggle. Demetrius eventually seized control of Macedonia in 294 BC.

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