In the spring of 44 BC Cassius Parmensis participated in the
assassination of Caesar by members of the Senate. In 43 BC, following the murder, he became a
quaestor and built a fleet which supported
Gaius Cassius Longinus against
Publius Cornelius Dolabella off the coast of the province of Asia. At the same time he wrote a report to
Cicero from Cyprus on the situation, which has been handed down in the latter's correspondence. In November of 43 Cassius Parmensis, like many other enemies of Caesar, was declared an outlaw (
proscribed) by the triumvirate of
Mark Antony,
Octavian, and
Lepidus. After the defeat of the party of the murderers of Caesar in the
Battle of Philippi (autumn of 42 BC), he gathered the remaining military units and was able to bring himself and the undamaged fleet to safety for a while with
Sextus Pompeius in Sicily. After the latter's defeat in the year 36 BC, he accompanied the fallen "naval king" to Asia Minor, in order to join Antony during the final battles in Bithynia. Antony and Octavian waged a propaganda attack with in part low blows and slanders which preceded the decisive military confrontation for autocratic rule in the Roman Empire. Cassius also took part with intense violent attacks against Caesar's heirs. He asserted that Octavian was of low descent, and was only named his heir due to a homosexual relationship with Caesar. Furthermore, he accused Octavian of wanting to make his only daughter Julia the consort of the rich but "barbarous" nobleman Koson of Dacia. In 31 BC, Cassius Parmensis fought under Antony's command at the
Battle of Actium. His flight from Octavian's revenge lasted a total of twelve years (which was longer than that of all the other conspirators) but after the fall of Antony he finally lost every possibility of fleeing, since the adopted son of Caesar now ruled the entire Roman Empire. After the defeat at Actium, he fled to Athens, where, in 30 B.C. at the very latest, he was recognized as the last surviving assassin of Caesar still living and was killed by Lucius Varus under Octavian's orders. ==Writings==