Salva sis Calpurnia

The comitia curiata was an older assembly than the comitia centuriata. Each of the three (supposedly original) tribes of the Ramnes, Tities and Luceres were broken down into ten curiae, for a total of 30. Election of the higher magistrates was performed differently in different periods. Originally the highest magistrate was called a praetor. When the office was opened to plebeians, that office became a consul, since, apparently, the plebian consul shared the auspices of his patrician colleague, and in this same period there was one patrician praetor elected, too. All three magistrates shared the same auspices, with their offices not differentiated at first by election in the comitia centuriata.

The comitia curiata then passed the lex curiata de imperio by which it conferred the authority to use imperium, and implied auspicium as well. Then the drawing of lots in the Senate demarcated where the imperium of each magistrate could be employed.

The proletariat were the capiti censi, not propertied to be in the lowest class, so not in army usually. They were in the army during the Punic Wars, and were usually enlisted into the navy when Rome called up a navy. Freedmen are thought to be in the proletariat, but those that had voting right were probably in the classes