On 10 January 49 BC, Julius Caesar made a momentous decision that would change the course of Roman history by defying the Senate's orders and crossing the Rubicon River with his army.
This bold act of insurrection, marked by his legendary declaration "alea iacta est" (the die is cast), ignited a civil war that ultimately led to Caesar's ascension as dictator for life, reshaping the Roman Republic into an autocratic regime under his rule.