Book 10
19.6
But when they decided to invade foreign territory a second time, so great was the influence of Cambaules' veterans, who had tasted the joy of plunder and acquired a passion for robbery and plunder, that a large force of infantry and no small number of mounted men attended the muster. So the army was split up into three divisions by the chieftains, to each of whom was assigned a separate land to invade.
19.7
Cerethrius was to be leader against the Thracians and the nation of the Triballi. The invaders of Paeonia were under the command of Brennus and Acichorius. Bolgius attacked the Macedonians and Illyrians, and engaged in a struggle with Ptolemy, king of the Macedonians at that time. It was this Ptolemy who, though he had taken refuge as a suppliant with Seleucus, the son of Antiochus, treacherously murdered him, and was surnamed Thunderbolt because of his recklessness. Ptolemy himself perished in the fighting, and the Macedonian losses were heavy. But once more the Celts lacked courage to advance against Greece, and so the second expedition returned home.
19.8
It was then that Brennus, both in public meetings and also in personal talks with individual Gallic officers, strongly urged a campaign against Greece, enlarging on the weakness of Greece at the time, on the wealth of the Greek states, and on the even greater wealth in sanctuaries, including votive offerings and coined silver and gold. So he induced the Gauls to march against Greece. Among the officers he chose to be his colleagues was Acichorius.
19.9
The muster of foot amounted to one hundred and fifty-two thousand, with twenty thousand four hundred horse. This was the number of horsemen in action at any one time, but the real number was sixty-one thousand two hundred. For to each horseman were attached two servants, who were themselves skilled riders and, like their masters, had a horse.