Political Instability and Administrative Crisis in Republican Rome (48–47 BC)

Caesar’s Extended Absence in Egypt and the Breakdown of Roman Communication. When Julius Caesar reached Italy near the end of September 47 BC, twenty months had elapsed since his departure for the Macedonian campaign and over a year since his decisive victory at the Battle of Pharsalus. Throughout most of 48 BC, Caesar had maintained regular correspondence with his deputies and political allies in Rome, though Cassius Dio notes that he deliberately refrained from sending official dispatches announcing Pompey's defeat, deeming such formal celebration of a fellow citizen's fall in poor taste. During the Alexandrian campaign, however, his typical volume of administrative correspondence ceased completely. Initially caused by the Egyptian military blockade, this silence persisted long after the blockade was broken; as late as 14 June 47 BC, Cicero observed: "No one reports that Caesar has left Alexandria, and it is known that no one at all has left there since 15th March, and that he has sent no letters since 13th December". This prolonged uncharacteristic silence fueled growing administrative paralysis, giving political opponents time to regroup and generating widespread panic across the Italian peninsula.

Political Agitation, Debt Relief Proposals, and Social Unrest. The political coalition supporting Caesar was largely held together by personal loyalty, gratitude for past favors, and expectations of future advancement, leaving it highly vulnerable during his prolonged absence. Discontent erupted when Marcus Caelius Rufus, who had been rewarded with a praetorship in 48 BC, grew bitter after being passed over for the senior post of urban praetor (praetor urbanus) in favor of Gaius Trebonius. Seeking to capitalize on social discontent, Caelius radicalized his platform by proposing the total abolition of debts (tabulae novae), attracting populace support beyond Caesar's moderate financial legislation. Joined by armed followers, Caelius instigated violent riots against both Trebonius and Caesar's consular colleague, Publius Servilius Isauricus.

The Senatus Consultum Ultimum and the Death of Caelius and Milo. In response to the growing civil disorder, the Roman Senate enacted the senatus consultum ultimum (Ultimate Decree of the Senate). Despite intercessions by two tribunes of the plebs, consul Servilius diverted legionary recruits en route to Brundisium and brought them into the city to suppress the insurrection, forcing Caelius to flee Rome. Caelius attempted to join forces with Titus Annius Milo, who had returned illegal from exile in Massilia and was attempting to raise an anti-Caesarian rebellion in the countryside under Pompey's name. However, Milo was defeated and killed before Caelius could join him, and Caelius himself met a similar fate shortly thereafter. Ironically, the regime relied on the senatus consultum ultimum—a emergency decree Caesar had historically opposed regarding its application against his own faction, though he never formally challenged its constitutional validity.

Constitutional Irregularities, the Second Dictatorship, and Mark Antony’s Administration. In October 48 BC, Caesar was appointed dictator for a full year—a distinct departure from his first short-term dictatorship aimed at conducting elections. Because Caesar could not return to Rome and refused to delegate electoral oversight, no consuls or regular magistrates were elected for 47 BC, leaving tribunes of the plebs as the primary civil officials. Appointed dictator by consul Servilius, Caesar sought legal authority while avoiding the precedent of Lucius Cornelius Sulla's indefinite dictatorship. Under Roman constitutional law, a dictator acted with a designated lieutenant rather than a colleague; Caesar named Mark Antony as his Master of the Horse (Magister Equitum). Although the college of augurs initially objected to Antony remaining in office past the traditional six-month limit, the procedural protest was soon withdrawn.

Administrative Misconduct and Governance under the Magister Equitum. Serving as the supreme authority in Italy from January 47 BC until Caesar's return in the autumn, Mark Antony struggled to maintain public order and personal restraint. Ancient sources detail his public ostentation, heavy drinking, scandalous affairs with senators' wives, and lavish processions through Italy accompanied by lictors, his mistress, and his mother. His governance severely damaged the regime's reputation among moderate senatorial factions, reinforcing fears that a permanent victory for Caesar would yield arbitrary autocracy. As Plutarch later recorded regarding the uncompromising Republican stance of Marcus Porcius Cato (Cato the Younger): "'For if,' said he, 'I were willing to be saved by grace of Caesar, I ought to go to him in person and see him alone; but I am unwilling to be under obligation to the tyrant for his illegal acts. And he acts illegally in saving, as if their master, those over whom he has no right at all to be their lord'".

Pompeian Regrouping and Military Mutinies in Italy. During Caesar's prolonged absence, surviving Pompeian leaders consolidated their forces across the Mediterranean. Following Pompey's death, Cato evacuated the garrison at Dyrrachium by sea to Cyrenaica and marched overland to the province of Africa. There, he assembled a massive Republican coalition alongside Quintus Caecilius Metellus Scipio, Titus Labienus, Lucius Afranius, Marcus Petreius, and King Juba I of Numidia. This growing army raised immediate threats of invasions targeting Sicily, Sardinia, and the Italian mainland, leaving figures like Cicero stranded in Italy under Antony's restrictions and in deep distress over the war's prolongation.

Legionary Mutinies and Civil Chaos in the Forum. Simultaneously, crisis erupted among Caesar's veteran legions—including the Ninth Legion (Legio IX) and Tenth Legion (Legio X)—who had been stationed in Campania following Pharsalus. Suffering from inactivity, lack of pay, delayed discharges, and unfulfilled promises of land grants and financial bounties, the soldiers mutinied, stoning the officers sent to restore discipline. When Antony personally visited the camps, he failed to quell the uprising. Capitalizing on Antony's absence from the capital, tribune of the plebs Publius Cornelius Dolabella (the son-in-law of Cicero) renewed demands for sweeping debt cancellation, triggering fresh riots in the Forum. Antony eventually returned to Rome with loyal troops, enforcing order through military force under another senatus consultum ultimum. While successful in suppressing the urban violence, the violent crackdown underscored the regime's reliance on autocratic military power and deepened internal factional rivalries.