Information about Brennus (3rd Century)

Brennus (or Brennos) (d. 279 BC) was one of the leaders of the the army of Gauls who invaded Macedonia and northern Greece, defeated the assembled Greeks at Thermopylae, and is popularly reputed to have sacked and looted Delphi, although the ancient sources do not support this.

Brennus is said to have belonged to an otherwise unknown tribe called the Prausi.^[1] These Gauls had settled in Pannonia because of population increases in Gaul, and sought further conquests. The army was initially led by Cambaules, who led them as far as Thrace, where they stopped. When they decided to advance again in 279 BC, they split their forces into three divisions. One division was led by Cerethrius against the Thracians and Triballi; another by Bolgios against the Macedonians and Illyrians; and the third against Paionia by Brennus and Acichorius. Bolgios' expedition inflicted heavy losses on the Macedonians and killed their king, Ptolemy Keraunos, but was repulsed by the Macedonian nobleman Sosthenes. Brennus' contingent then attacked Sosthenes as defeated him, and proceeded to ravage the country. After these expeditions returned, Brennus urged a united, and potentially lucrative, attack on Greece, led by himself and Acichorius. The army numbered 152,000 infantry and 24,400 cavalry, Pausanias describes how they used a tactic called trimarcisia, where each cavalryman was supported by two mounted servants, who could supply him with a spare horse if he was dismounted, or take his place in the battle if he was killed or wounded, so the actual number of horsemen was in fact 61,200.^[2]

The Greeks, mustered at Thermopylae under the Athenian general Calippus, learned that the Gauls had reached Phthiotis and Magnesia, sent their cavalry and light infantry to meet them at the river Spercheios and oppose their crossing. They broke down the bridges and camped on the bank, but that night Brennus sent 10,000 men to cross further downriver, where the river formed a marshy lake. The Gauls were strong swimmers, some of them using their shields as floats, and the river was shallow enough for the tallest to wade across. The Greeks retreated to the main army, while Brennus forced the locals to rebuild the bridges to allow the rest of his forces to cross.^[3]

The Gauls attacked the Greeks at Thermopylae, but were initially forced to retreat by their better armed opponents.^[4] Brennus sent 40,000 infantry and 800 cavalry under Combutis and Orestorius back over the Spercheius to invade Aetolia, hoping to persuade the Aetolian contingent in the Greek army to leave Thermopylae and return to defend their homeland. The plan worked, but the returning Aetolians inflicted such losses on the Gauls that less than half of them returned to Thermopylae. Meanwhile, the locals were intimidated into showing Brennus a mountain pass that would allow him to attack the Greek rear. He led 40,000 men, hidden until the last minute by fog, over the pass, and defeated the Greeks. The Athenian fleet evacuated the survivors, and Brennus marched for Delphi, not waiting for Acichorius and the rest of the army to catch up.^[5]

Both the historians who relate the attack on Delphi, Pausanias and Junianus Justinus, say the Gauls were defeated and driven off. They were overtaken by a violent thunderstorm which made it impossible to manoeuvre or even hear their orders. The night that followed was frosty, and in the morning the Greeks attacked them from both sides. Brennus was wounded and the Gauls fell back, killing their own wounded who were unable to retreat. That night a panic fell on the camp, as the Gauls divided into factions and fought amongst themselves. They were joined by Acichorius and the rest of the army, but the Greeks forced them into a full-scale retreat. Brennus took his own life, by drinking neat wine according to Pausanias, by stabbing himself according to Justinus. Pressed by the Aetolians, they fell back to the Spercheius, where they were cut to pieces by the waiting Thessalians and Malians.^[6]

The Gauls who escaped this defeat settled on the Hellespont in the country around Byzantium, where they founded the kingdom of Galatia.^[7] The Amphictyonic League instituted new games, the Delphic Soteria ("deliverance" or "salvation") to commemorate their victory.^[8]

Strabo reports a story told in his time of treasure - fifteen thousand talents of gold and silver - supposed to have been taken from Delphi and brought back to Tolosa (modern Toulouse, France) by the Tectosages, who were said to have been part of the invading army. Strabo does not believe this story, arguing that the defeated Gauls were in no position to carry off such spoils, and that in any case Delphi had already been despoiled of its treasure by the Phocians during the Third Sacred War the previous century.<ref name="strabo" /> However, despite the evidence against it, Brennus' sack of Delphi is presented as fact by some modern popular historians.^[9]

Some writers suppose that Brennus and Acichorius are the same persons, the former being only a title and the latter the real name.^[10][11]

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