Thus , when some of the eastern allies and mercenaries started deserting , Brutus was forced to attack on the afternoon of October 23 .
Plutarch also reports that Brutus had not received news of Domitius Calvinus ' defeat in the Ionian Sea .
When some of the eastern allies and mercenaries started deserting , Brutus was forced to attack on the afternoon of October 23 .
Plutarch also reports that Brutus had not received news of Domitius Calvinus ' defeat in the Ionian Sea .