Caliburn Lionheart became the first army instructor of Reborn. He and the fellow Lionhearts started a bootcamp, one where all the talented youngsters from Reborn were trained in order for them to become accustomed to an army lifestyle.
Yes, Rebornians were already powerful enough and didn't need that much experience in order to advance through their cultivation levels, but that didn't mean that they were ready to become an army.
They might be okay to fight one on one. But fighting together against an army was a totally different beast altogether.
So, Caliburn started the bootcamp. About fifty thousand capable men and women volunteered for this project, all of whom were personally vetted by Michael as people who had talent in fighting in an army.
Caliburn would teach them how to organize themselves into battalions, into groups, and into teams, and other such denominations.
They would show them how to properly act through the chain of command.
