Following his decisive victory at Pharsalus, Julius Caesar chased the defeated Pompey toward Egypt, setting in motion events that would draw Rome directly into the succession crisis between Cleopatra VII and her brother Ptolemy XIII. The resulting entanglement reshaped Mediterranean politics for a generation.
By the summer of 48 BC, the Roman Republic's great civil war had reached its climax at Pharsalus in Greece, where Caesar's battle-hardened legions crushed Pompey's larger but less disciplined force. Pompey, once Rome's most celebrated general, fled with a small retinue toward Egypt, hoping the young pharaoh Ptolemy XIII might offer him refuge and support.
Instead, Ptolemy's advisors, eager to curry favor with the apparently victorious Caesar, had Pompey murdered on the beach at Alexandria as he stepped ashore. When Caesar himself arrived shortly after in pursuit, he was reportedly presented with Pompey's severed head—a gift meant to please him but which instead, according to ancient sources, filled him with disgust at the treachery.
Caesar's presence in Alexandria that summer thrust him into the middle of the Egyptian civil war between Ptolemy XIII and his sister-wife Cleopatra VII, and it was in these months that Caesar and Cleopatra began the political and romantic alliance that would produce a son, Caesarion, and later draw Mark Antony into Egypt's orbit as well. The chain of events launched in these weeks would ultimately end with Cleopatra's death and Egypt's absorption into the Roman Empire.