In the Roman Republic, the dictator was an extraordinary magistrate with the absolute authority to perform tasks beyond the authority of the ordinary magistrate. The office was the single exception during the Republic to the principle of collegiality (under which every office was composed of more than one citizen). Dictators were appointed in order to wage war on a particular enemy, to settle a constitutional crisis, to conduct special religious functions, or to conduct certain types of election. Dictators were appointed by the consuls, who were authorised to do so by a senatus consultum (dictum) of the Roman Senate. The dictator was superior to all other magistracies in the republic, and had no legal responsibility for his actions. He was attended by 24 lictors, and could over-rule, depose from office, or put to death any other magistrate. Unlike all other magistracies (including the consulship), the dictator was not required to co-operate with the senate, and had the absolute power to put any citizen to death, and to create, change, or amend any law. The dictator was always attended by a Master of the Horse.