Octavian wrote back at the end of March to report that he was doing as he had promised: his army of nearly ten thousand men was striking camp just south of Bononia, beside the Via Aemilia, and moving off to join the armies of Hirtius and Pansa in relieving the siege of Mutina:
Around this time, word began to reach Cicero of events in the east. From Brutus in Macedonia he learned that Dolabella – heading for Syria at the head of a small force – had reached as far as Smyrna on the eastern shores of the Aegean, where he had encountered the governor of Asia, Trebonius. Trebonius had treated him civilly enough and even allowed him to proceed on his way. But that night Dolabella had secretly turned back, entered the city, seized Trebonius while he was asleep, and subjected him to two days and nights of intensive torture, using whips, the rack and hot irons, to force him to disclose the whereabouts of his treasury. After that, on Dolabella’s orders, his neck was broken. His head was cut off and Dolabella’s soldiers kicked it back and forth through the streets until it was completely crushed, while his body was mutilated and placed on public display. ‘Thus dies the first of the assassins who murdered Caesar,’ Dolabella was said to have declared. ‘The first – but he will not be the last.’
Trebonius’s remains were shipped to Rome and subjected to a post-mortem examination to confirm the manner of his death before being passed to his family for cremation. His grisly fate had a salutary effect on Cicero and the other leaders of the republic. They knew now what to expect if they fell into the hands of their enemies, especially when Antony issued an open letter to the consuls pledging his loyalty to Dolabella and expressing his delight at Trebonius’s fate: