Antipater: The regent who governed while Alexander conquered

Antipater served as regent while Alexander the Great campaigned abroad, then became a leading figure in the Diadochi Wars.

Alexander’s death drew him into the struggle among the king’s successors.

Military success and political manoeuvring make his career both consequential and controversial.

It also illustrates the complicated relationships between leadership and power in the ancient world.

Antipater’s early life and military service

Antipater was born in 397 BC in the Macedonian region of Upper Macedonia. He was the son of Iollas and the father of Cassander, who would later become king of Macedon.

He distinguished himself in battle under Philip II, then continued under Alexander, becoming one of his most trusted generals.

Antipater helped crown Alexander the Great

Antipater helped secure Alexander’s succession after Philip II’s death.

Philip’s assassination in 336 BC threatened instability as rival factions competed for influence at court.

Antipater and other senior courtiers quickly supported Alexander to keep the transition orderly. He and Parmenion were particularly important in demonstrating support for the new king.

His experience, court influence and aristocratic connections helped him navigate the succession. As governor of Macedonia, he had already proved an able administrator.

The supreme commander of the European forces

Alexander rewarded his loyalty by naming him supreme commander of the European forces, giving him responsibility for a substantial part of the army during campaigns in Greece and beyond.

Strengthening Alexander’s rule

One of Antipater’s earliest actions as supreme commander was to join Alexander in putting down the rebellious Greek city of Thebes in 335 BC. After the city was defeated, Alexander left Antipater in sole command of the garrison there, clearly indicating his trust and confidence in his general.

In 331 BC, Agis III of Sparta led a large anti-Macedonian coalition. Antipater gathered a powerful army to face his greatest challenge yet.

At Megalopolis, his Macedonian forces crushed the Spartan king.

The victory strengthened his reputation as one of Alexander’s most capable commanders.

It also secured Macedonian control of Greece and prevented further rebellions.

Problems with Olympias

His loyal service did not prevent conflict with Alexander’s mother Olympias.

When Alexander’s sister Cleopatra fell out with Olympias, Antipater took her in. Olympias saw this as a challenge to her authority at court.

Growing division

She repeatedly complained to Alexander. He ignored her at first but gradually came to believe the accusations.

For a commander who had worked to support the reign and preserve stability, this was a serious blow.

In the end, Alexander’s growing suspicions led him to take action against Antipater. He sent Craterus, another trusted general, to replace Antipater as the supreme commander of the European forces.

Alexander ordered him to Babylon to answer the accusations in person.

It was a major setback after a career devoted to the Macedonian monarchy.

Removing such a capable, loyal commander showed the growing mistrust and infighting at court.

Friction with Alexander the Great

Another dispute arose when Alexander requested troops for his planned invasion of Persia.

The scale of the king’s ambitions required support from his generals.

Antipater refused, arguing that Greece was still too unsettled to spare troops overseas.

He sent Cassander instead, hoping to reassure Alexander without weakening his own territory.

Alexander took offence, and their relationship never fully recovered. Antipater’s family lost favour, while rumours later linked Cassander to Alexander’s death.

These rumors were never substantiated, but they were a clear indication of the growing mistrust and suspicion that characterized the politics of the Diadochi Wars that followed Alexander’s death.

Life after the death of Alexander

After Alexander died, generals and allies competed for control as his empire broke apart.

This period of conflict and instability, known as the Diadochi Wars, saw the rise of several powerful kingdoms and dynasties, each vying for control of the lands once ruled by Alexander.

The Lamian War

Greece’s unrest soon appeared to vindicate Antipater’s refusal to send troops to the Persian campaign.

Succession tensions quickly became open warfare.

Athenian uprising

Athens led the Lamian War uprising, seeking to exploit the uncertainty and restore its democracy’s power.

Antipater and Craterus quickly mobilized their forces and marched to meet the Greeks in battle. Despite being outnumbered, they were able to win a decisive victory at the Battle of Crannon, effectively crushing the rebellion and reestablishing Macedonian control over Greece.

Afterwards, direct Macedonian control effectively ended Athenian democracy and strengthened the monarchy.

It marked a turning point in Greece and prepared the way for the Hellenistic period.

Rift with Perdiccas

Antipater’s uneasy relationship with Perdiccas, one of Alexander’s top generals and a key player in the early years of the Diadochi Wars, came to a head over the marriage issue.

Perdiccas was widely believed to be plotting to entrench his own power and establish himself as the sole successor to Alexander’s empire. One of the ways he sought to achieve this was by breaking his betrothal with Antipater’s daughter and marrying Cleopatra, Alexander’s sister.

However, the insult of Perdiccas seeking to bypass his own arranged marriage and marry into Alexander’s family was not lost on the veteran Macedonian commander.

Antipater was deeply offended by what he saw as Perdiccas‘ power grab, and he began to oppose the ambitious general openly.

Antipater and the first war of the Diadochi (321–319 BC)

Antipater’s opposition to Perdiccas‘ bid for power ultimately led to the formation of an anti-Perdiccas coalition, which included Antipater’s long-time ally, Craterus, and Ptolemy, another of Alexander’s most trusted generals.

Perdiccas attempted to invade Egypt in a bid to cement his control over the empire. Still, he was ultimately defeated and killed by his own generals, who had grown tired of his constant power plays and overbearing personality.

The settlement of Triparadisus

The settlement of Triparadisus in 321 BC marked a turning point.

It formally divided the Empire among the surviving generals, with Antipater helping organise the new political order.

He was appointed as regent of Macedon, responsible for overseeing the empire’s European territories, while Ptolemy was given control of Egypt and the surrounding regions.

The settlement did little to end their fighting, but supplied a framework for the continuing struggle.

Antipater’s death and legacy

Antipater died of old age at 80. Polyperchon, another Macedonian aristocrat, succeeded him as regent.

Cassander soon challenged Polyperchon, whose rule was troubled by instability and conflict.

Cassander eventually secured Macedonia and expanded its influence, carrying on the legacy of Antipater and the generals who had helped Alexander conquer the known world.

Antipater’s part in shaping the early Hellenistic period continued to influence the rule of his successors.

• Check out our full in-depth article on the Generals of the Diadochi.

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