Julius Caesar conflict Caesar's Civil War
Italy, Spain, and Greece
Around 10 or 11 January 49 BC, in response to the Senate's "final decree", Caesar crossed the Rubicon – the river defining the northern boundary of Italy – with a single legion, the Legio XIII Gemina, and ignited civil war. Upon crossing the Rubicon, Caesar, according to Plutarch and Suetonius, is supposed to have quoted the Athenian playwright Menander, in Greek, "let the die be cast". Pompey and many senators fled south, believing that Caesar was marching quickly for Rome. Caesar, after capturing communication routes to Rome, paused and opened negotiations, but they fell apart amid mutual distrust. Caesar responded by advancing south, seeking to capture Pompey to force a conference.Pompey withdrew to Brundisium and was able to escape to Greece, abandoning Italy in face of Caesar's superior forces, evading Caesar's pursuit. Caesar stayed near Rome for about two weeks – during his stay his forceful seizure of the treasury over tribunician veto put the lie to his pro-tribunician war justifications – and left Lepidus in charge of Italy while he attacked Pompey's Spanish provinces. He defeated two of Pompey's legates at the Battle of Ilerda before forcing surrender of the third; his legates moved into Sicily and into Africa, though the African expedition failed. Returning to Rome in the autumn, Caesar had Lepidus, as praetor, bring a law appointing Caesar dictator to conduct the elections; he, along with Publius Servilius Isauricus, won the following elections and would serve as consuls for 48 BC. Resigning the dictatorship after eleven days, Caesar then left Italy for Greece to stop Pompey's preparations, arriving in force in early 48 BC.Caesar besieged Pompey at Dyrrhachium, but Pompey was able to break out and force Caesar's forces to flee. Following Pompey southeast into Greece and to save one of his legates, he engaged and decisively defeated Pompey at Pharsalus on 9 August 48 BC. Pompey then fled for Egypt; Cato fled for Africa; others, like Cicero and Marcus Junius Brutus, begged for Caesar's pardon.Alexandrine war and Asia Minor
Pompey was killed when he arrived in Alexandria, the capital of Egypt. Caesar arrived three days later on 2 October 48 BC. Prevented from leaving the city by Etesian winds, Caesar decided to arbitrate an Egyptian civil war between the child pharaoh Ptolemy XIII Theos Philopator and Cleopatra, his sister, wife, and co-regent queen. In late October 48 BC, Caesar was appointed in absentia to a year-long dictatorship, after news of his victory at Pharsalus arrived to Rome. While in Alexandria, he started an affair with Cleopatra and withstood a siege by Ptolemy and his other sister Arsinoe until March 47 BC. Reinforced by eastern client allies under Mithridates of Pergamum, he then defeated Ptolemy at the Battle of the Nile and installed Cleopatra as ruler. Caesar and Cleopatra celebrated the victory with a triumphal procession on the Nile; he stayed in Egypt with Cleopatra until June or July that year, though the relevant commentaries attributed to him give no such impression. Some time in late June, Cleopatra gave birth to a child by Caesar, called Caesarion.When Caesar landed at Antioch, he learnt that during his time in Egypt, the king of what is now Crimea, Pharnaces, had attempted to seize his father's kingdom of Pontus across the Black Sea. His invasion had swept aside Caesar's legates and the local client kings but Caesar engaged him at Zela and defeated him immediately, leading Caesar to write veni, vidi, vici ("I came, I saw, I conquered"), Pompey's previous victories over such poor enemies. He then left quickly for Italy.
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