 Complete the following phrase:  After the end of the Gallic wars, the Roman Senate refused Caesar his second consulship, ordered him to give up his commands, and demanded he return to Rome to face prosecution. Forced to choose either the end of his political career or civil war, Caesar brought Legio XIII across the Rubicon river and into Italy. The legion remained faithful to Caesar during the resulting civil war between Caesar and the conservative Optimates faction of the senate, whose legions were commanded by Pompey. Legio XIII was active throughout the entire war, fighting at Dyrrhachium 48 BC and Pharsalus 48 BC. After the decisive victory over Pompey at Pharsalus, the legion was to be disbanded, and the legionaries pensioned off with the traditional land grants; however, the legion was recalled for the 