The Roman civil war of 49 BCE, sometimes called Caesar's Civil War, one of the last conflicts within the Roman Republic, is a series of political and military confrontations between Julius Caesar, his political supporters, and his legions, against the traditionalist conservative faction in the Roman Senate, sometimes known as the Optimates, or boni, backed by legions loyal to Pompey.After a long political and military struggle, between 49 and 45 BCE, which encompasses battles in Italia, Greece, Egypt, Africa, and Hispania, Caesar finally defeats the last of the traditional faction of the Roman senate at the Battle of Munda and becomes dictator.Caesar's civil war and its resulting changes in Roman government all but sweep away the political traditions of the Roman Republic, a blow which eventually leads to the Roman Empire.