During his time in the Senate, Caesar played a significant role in shaping Roman politics. He was known for his outstanding oratory skills and his ability to forge political alliances. Caesar also served as a military commander and led successful military campaigns in Gaul (present-day France) and Britain. His military victories brought him immense popularity and fame, further enhancing his political influence in Rome.
However, Caesar's rise to power was not without controversy. His political ambitions and desire for greater authority led to conflicts with other influential figures in the Senate, particularly Pompey and Cato the Younger. These conflicts eventually culminated in a civil war between Caesar's forces and the Senate's forces, which resulted in Caesar's victory in 49 BC.
Following his victory, Caesar became the undisputed leader of the Roman world and assumed the title of dictator, essentially ruling as a one-man government. He implemented various political reforms and public projects during his rule but was eventually assassinated by a group of senators, led by Brutus and Cassius, on March 15, 44 BC, due to concerns about his growing power and desire for absolute control.
Therefore, it can be confirmed that Julius Caesar served in the Roman Senate and played a significant role in Roman politics and governance until his assassination in 44 BC.