Antiochus III(241 av. J.-C. — 186 av. J.-C.)

Antiochus III

royaume séleucide

7 min read

PoliticsMilitaryAntiquityHellenistic period, the age of the kingdoms that emerged from the division of Alexander's empire and the rise of Rome (3rd-2nd century BC).

Antiochus III, known as the Great, was a Seleucid king who reigned from 223 to 187 BC. He restored the Seleucid Empire through vast campaigns into the East, but was defeated by Rome, which marked the rise of Roman power in the eastern Mediterranean.

Frequently asked questions

Antiochus III (241–187 BC) was a Seleucid king who reigned from 223 to 187 BC. What earns him the nickname “the Great” is his vast expedition to the East between 212 and 205 BC: he restored Seleucid authority from Media all the way to the borders of India, even striking a deal with the Indian king Sophagasenus to obtain war elephants. The key point to remember is that he gave the Seleucid empire back the scale it had had under Seleucus I, before Rome came along to break his momentum.

Key Facts

  • Ascends the Seleucid throne in 223 BC
  • Leads the “anabasis” (212-205 BC), a great expedition into the East that earns him the title “the Great”
  • Welcomes Hannibal to his court after his flight from Carthage
  • Defeated by the Romans at Thermopylae in 191 BC, then at Magnesia ad Sipylum in 190 BC
  • Signs the Treaty of Apamea in 188 BC, ceding Asia Minor; dies in 187 BC

Works & Achievements

Great Eastern Anabasis (212-205 BC)

A vast military campaign that restored Seleucid authority from Media to the borders of India, earning Antiochus the title of “the Great.”

Conquest of Coele-Syria (Fifth Syrian War) (202-200 BC)

The annexation of Coele-Syria and Palestine at the expense of Ptolemaic Egypt, secured by the victory at Panion in 200 BC.

Administrative reorganization of the empire (around 220-205 BC)

A reform of the Seleucid government, with the appointment of viceroys and the strengthening of the royal cult to unify an immense territory.

Restoration of authority in Asia Minor (around 216-213 BC)

The suppression of the revolt of the governor Achaeus, besieged and captured at Sardis, which re-established Seleucid control over Anatolia.

Expansion into Thrace and Europe (196 BC)

The crossing into Thrace and the refounding of Lysimachia, a gesture of European ambition that aroused the alarm and hostility of Rome.

Large-scale monetary policy (223-187 BC)

The massive minting of silver tetradrachms bearing his likeness in numerous workshops, spreading his image and financing his armies.

Anecdotes

To conclude peace with the Indian king Sophagasenos around 206 BC, Antiochos III obtained additional war elephants, bringing his elephant cavalry back up to about 150 beasts. This great expedition to the East, which took him as far as the edges of India, earned him the prestigious nickname *Megas*, the Great.

In 209 BC, before the rebel city of Bactra, Antiochos won a battle against the Greco-Bactrian king Euthydemus, but was wounded in the mouth and lost several teeth during a cavalry skirmish. Despite his victory, he recognized Euthydemus's kingship rather than bog himself down in an endless siege.

After his defeat by Rome, Antiochos welcomed to his court the famous Carthaginian general Hannibal, sworn enemy of the Romans, who became his military adviser. Legend has it that Hannibal, on seeing the king's vast and motley army, made an ironic remark: all that gold and luxury would be more than enough “for the Romans,” meaning that they would make rich plunder of it.

At the Battle of Magnesia in 190 BC, Antiochos's huge army, tens of thousands strong and equipped with scythed chariots, was crushed by the far less numerous Roman legions of Scipio. His own scythed chariots, panicked by the arrows, turned on his own troops and spread chaos.

Antiochos III died in 187 BC in a manner humiliating for a great king: short of money to pay the heavy tribute imposed by Rome, he attempted to plunder the temple of Bel at Elymais, in Persia. The inhabitants, enraged by this sacrilege, attacked and killed him along with his escort.

Primary Sources

Polybius, Histories, Book XI (siege of Bactra and agreement with Euthydemus) (2nd century BC)
Euthydemus argued that it was not just to deprive him of his kingdom, for he himself had not revolted against the king, but on the contrary had destroyed the descendants of other rebels. Antiochus, persuaded by these reasons, agreed to conclude a treaty and to grant him the royal title.
Livy, History of Rome, Book XXXVII (Battle of Magnesia) (late 1st century BC)
The scythed chariots, which Antiochus had positioned in front, far from harming the enemy, threw his own ranks into confusion, for the horses, frightened by the missiles, rushed unchecked against his own troops.
Polybius, Histories, Book XXI (Peace of Apamea) (2nd century BC)
Antiochus shall evacuate all the cities and territories lying on this side of the Taurus, pay fifteen thousand Euboean talents of silver, and surrender his elephants and warships.
Livy, History of Rome, Book XXXV (Hannibal at the court of Antiochus) (late 1st century BC)
Hannibal, seeing the king's army resplendent with gold and silver, and asked by Antiochus whether he thought all this would be enough against the Romans, replied that he believed it quite enough for the Romans, greedy as they were.

Key Places

Antioch on the Orontes

Western capital of the Seleucid Empire, founded by Seleucus I, the seat of Antiochus III's power. One of the greatest cities of the Hellenistic world.

Bactra (Balkh)

Capital of the Greco-Bactrian kingdom, which Antiochus besieged before recognizing the kingship of Euthydemus around 206 BC. A major stage of his great eastern expedition.

Raphia

A city near Gaza where Antiochus suffered a heavy defeat in 217 BC against Ptolemy IV of Egypt. The battle pitted tens of thousands of men and elephants against each other.

Magnesia ad Sipylum

A plain in Asia Minor where the Seleucid army was annihilated by the Roman legions in 190 BC. This defeat sealed the end of Antiochus's expansion.

Thermopylae

A pass in central Greece where Antiochus was defeated by the Romans in 191 BC, forcing him to abandon Greece. The legendary site of ancient Greek resistance.

Elymais (Susiana)

A region of Persia where Antiochus III was killed in 187 BC while attempting to plunder a temple to pay the tribute owed to Rome. The site of his violent death.

See also