It began Process_start as a series of political Social_event and military confrontations Hostile_encounter , between Julius Caesar ( 100–44 BC ) , his political supporters ( broadly known as Populares ) , and his legions , against the Optimates ( or `` Boni '' ) , the politically conservative and socially traditionalist faction of the Roman Senate , who were supported Supporting by Pompey ( 106–48 BC ) and his legions .

It began Process_start as a series of political Social_event and military confrontations Hostile_encounter , between Julius Caesar ( 100–44 BC ) , his political supporters ( broadly known as Populares ) , and his legions , against the Optimates ( or `` Boni '' ) , the politically conservative and socially traditionalist faction of the Roman Senate , who were supported Supporting by Pompey ( 106–48 BC ) and his legions .

He commanded Control two legions ( the infamous Fimbrians ) .

Fulvia and Antony 's younger brother , Lucius Antonius , raised Cause_change_of_position_on_a_scale eight legions in Italy .

Under the leadership of their hereditary prince Gaius Julius Civilis , an auxiliary officer in the Imperial Roman army , the Batavi and their allies managed to inflict a series of humiliating defeats on the Roman army , including the destruction Destroying of two legions .