The mercenary system was a system created to replicate the Greyhound Family's Shadow Mercenaries, who do random jobs for a price. The people who started this system were the citizens of smaller countries that have been destroyed by the Granado Empire. Without a country to serve and live in, these people had difficulties aside from being refugees. So in order to survive, they created the Mercenary System.
At first, the Mercenary System was only used by those that had no countries those who no other choice, but later on people of other countries implemented the system into their own countries. The reason they implemented the system into their countries was because most of them were unable to become knights or soldiers since those jobs were only allowed to the upper class, or sometimes to those of the middle class. The lower class citizens had no way of gaining such jobs, so in the end, they implemented the Mercenary system, and created mercenaries within their very own countries.
