Julius Caesar was given additional power of government.
Julius Caesar . These achievements granted him unmatched military power and threatened to eclipse the standing of Pompey , who had realigned himself with the Senate after the death of Crassus in 53 BC . After assuming control of government , Caesar began a programme of social and governmental reforms , including the creation of the Julian calendar . He centralised the bureaucracy of the Republic and was eventually proclaimed `` dictator in perpetuity '' , giving him additional authority .