During the Siege of Alesia in 52 BC , Centurion Lucius Vorenus of the 13th Legion command his men as Gallic warriors fall on his line . In contrast to the Gauls ' chaotic charge , the Roman files fight with precision , until one drunk legionary , Titus Pullo , break ranks and charges into the crowd of Gauls . Vorenus angrily order him back into formation , but Pullo hit him . Later , the assembled soldiers watch as Pullo is flogged and condemned to death for his disorderly conduct . The day after , Vercingetorix , " King of the Gauls " , is brought before Julius Caesar and made to surrender , ending the eight @-@ year @-@ long Gallic Wars . Caesar 's niece , Atia of the Julii , order her son Octavian to deliver a horse she have purchased straight to Caesar in Gaul to ensure that he remember them above all other well @-@ wishers . Caesar himself receive news that his daughter , married to his friend Gnaeus Pompeius Magnus with whom he share power in Rome , have died in childbirth along with her stillborn daughter . A blood tie broken between them , Caesar order a new wife be found for Pompey .