Liberators' civil war in the context of "Rome's war against Parthia"

The Second Triumvirate was an extraordinary commission and magistracy created at the end of the Roman republic for Mark Antony, Lepidus, and Octavian to give them practically absolute power. It was formally constituted by law on 27 November 43 BC with a term of five years; it was renewed in 37 BC for another five years before expiring in 32 BC. Constituted by the lex Titia, the triumvirs were given broad powers to make or repeal legislation, issue judicial punishments without due process or right of appeal, and appoint all other magistrates. The triumvirs also split the Roman world into three sets of provinces.

The triumvirate, formed in the aftermath of a conflict between Antony and the senate, emerged as a force to reassert Caesarian control over the western provinces and wage war on the liberatores led by the men who assassinated Julius Caesar. After proscriptions, purging the senatorial and equestrian orders, and a brutal civil war, the liberatores were defeated at the Battle of Philippi. After Philippi, Antony and Octavian took the east and west, respectively, with Lepidus confined to Africa. The last remaining opposition to the Triumvirs came from Sextus Pompey, a son of Pompey the Great, who controlled Sicily, Corsica and Sardinia.

Julius Caesar, the Roman dictator, was assassinated on the Ides of March (15 March), 44 BC, by a group of senators during a Senate session at the Curia of Pompey, located within the Theatre of Pompey in Rome. The conspirators, numbering between 60 and 70 individuals and led by Marcus Junius Brutus, Gaius Cassius Longinus, and Decimus Junius Brutus Albinus, stabbed Caesar approximately 23 times. They justified the act as a preemptive defense of the Roman Republic, asserting that Caesar's accumulation of lifelong political authority—including his perpetual dictatorship and other honors—threatened republican traditions.

The assassination failed to achieve its immediate objective of restoring the Republic's institutions. Instead, it precipitated Caesar's posthumous deification, triggered the Liberators' civil war (43–42 BC) between his supporters and the conspirators, and contributed to the collapse of the Republic. These events ultimately culminated in the rise of the Roman Empire under Augustus, marking the beginning of the Principate era.

The Roman–Parthian Wars (54 BC – 217 AD) were a series of conflicts between the Parthian Empire and the Roman Republic and Roman Empire. It was the first series of conflicts in what would be 682 years of Roman–Persian Wars.

Battles between the Parthian Empire and the Roman Republic began in 54 BC. This first incursion against Parthia was repulsed, notably at the Battle of Carrhae (53 BC). During the Roman Liberators' civil war of the 1st century BC, the Parthians actively supported Brutus and Cassius, invading Syria, and gaining territories in the Levant. However, the conclusion of the second Roman civil war brought a revival of Roman strength in Western Asia.

The Battle of Philippi was the final battle in the Liberators' civil war between the forces of Mark Antony and Octavian (of the Second Triumvirate) and the leaders of Julius Caesar's assassination, Brutus and Cassius, in 42 BC, at Philippi in Macedonia. The Second Triumvirate declared the civil war ostensibly to avenge Julius Caesar's assassination in 44 BC, but the underlying cause was a long-brewing conflict between the Optimates and the Populares.

The battle, involving up to 200,000 men in one of the largest of the Roman civil wars, consisted of two engagements in the plain west of the ancient city of Philippi. The first occurred in the first week of October; Brutus faced Octavian, and Antony's forces fought those of Cassius. The Roman armies fought poorly, with low discipline, nonexistent tactical coordination, and amateurish lack of command, with neither side able to exploit opportunities as they developed. At first, Brutus pushed back Octavian and entered his legions' camp. However, to the south, Cassius was defeated by Antony and died by suicide after hearing a false report that Brutus had also failed. Brutus rallied Cassius's remaining troops, and both sides ordered their army to retreat to their camps with their spoils. The battle was essentially a draw but for Cassius's suicide. A second encounter, on 23 October, finished off Brutus's forces after a hard-fought battle. He took his own life in turn, leaving the triumvirate in control of the Roman Republic.

Antipater I the Idumaean (113 or 114 BCE – 43 BCE) was the founder of the Herodian dynasty and father of Herod the Great. According to Josephus, he was the son of Antipas and had formerly held that name. A native of Idumaea (a region southeast of Judah in which the Edomites settled during the classical period) Antipater became a powerful official under the later Hasmonean kings and subsequently became a client of Roman General Pompey when Pompey conquered Judah in the name of the Roman Republic.

After Julius Caesar defeated Pompey at the Battle of Pharsalus, Antipater sided with Caesar during the Roman Civil War. During Caesar's Egyptian campaign, Antipater joined Mithridates of Pergamon's army marching to rescue Caesar in Alexandria. Caesar made him chief minister of Judea, as Judah became known to the Romans, with the right to collect taxes. Eventually Caesar made Antipater's sons Phasaelus and Herod the governors of Jerusalem and Galilee, respectively. After the assassination of Caesar, Antipater was forced to side with the Liberators against the Caesarians. The pro-Roman politics of Antipater led to his increasing unpopularity among the devout, non-Hellenised Jews. He died by poison. The diplomacy and artful politics of Antipater, as well as his insinuation into the Hasmonean court, paved the way for the rise of his son Herod the Great, who used this position to marry the Hasmonean princess Mariamne, endear himself to Rome and become king of Judea under Roman influence.

Legio X Gemina ("10th Twin(s) Legion" in English), was a Roman legion, which was active during the late Roman Republic and later the Roman Empire as part of the Imperial Roman army. It was one of the four legions used by Julius Caesar in 58 BC, during the Roman invasion of Gaul. After being briefly disbanded, the legion was reconstituted by Augustus (also known as Octavian) and fought on the side of the Second Triumvirate during the Liberators' Civil War and later on the side of Augustus during the War of Actium which ended the Crisis of the Roman Republic. The legion remained active for centuries, with surviving records of its continued existence in Vienna as late as the 5th century AD. The legion's symbol was a bull. Early on in its history, the legion was called X Equestris (mounted), because Caesar once used the legionaries as cavalry.

Julius Caesar, the Roman dictator, was assassinated on the Ides of March (15 March), 44 BC, by a group of senators during a Senate session at the Curia of Pompey, located within the Theatre of Pompey in Rome. The conspirators, numbering 60 individuals and led by Marcus Junius Brutus, Gaius Cassius Longinus, and Decimus Junius Brutus Albinus, stabbed Caesar approximately 23 times. They justified the act as a preemptive defense of the Roman Republic, asserting that Caesar's accumulation of lifelong political authority—including his perpetual dictatorship and other honors—threatened republican traditions.

The assassination failed to achieve its immediate objective of restoring the Republic's institutions. Instead, it precipitated Caesar's posthumous deification, triggered the Liberators' civil war (43–42 BC) between his supporters and the conspirators, and contributed to the collapse of the Republic. These events ultimately culminated in the rise of the Roman Empire under Augustus, marking the beginning of the Principate era.