St. Michael the Archangel is a humble being who was not initially a warrior angel, nor was he granted the title of saint or even the general of the celestial armies. His beginnings were as a newly created angel placed in the choir of archangels. Like us humans, he also had doubts about what his full potential could become, although he was content as an archangel.
Eons passed since the creation of time itself, and Michael was selected to become a warrior angel in the celestial army commanded by General Azrael at the time. He passed a rigorous and incomprehensible set of trials to earn the title of warrior in God's celestial army. Shortly after, according to celestial time, war in heaven broke out, led by Lucifer, who was formerly known as Samael. At a critical moment, his general did not have the faith needed to repel the legions trying to invade God's throne and kingdom. God bestowed an unfathomable blessing upon Michael, who was transformed into the Blue-Flamed Angel and promoted to the choir of Seraphim. With Michael's new abilities and responsibilities, he defeated the dragon and his legions, banishing them from the heavens.
However, the battle was just beginning when Man was created, posing new curiosities among the celestials and threats from the demonic enemy legions. The Son of God, Jesus, had now taken over the responsibilities of his Father when the unthinkable happened. God's newest creation, Man, had fallen into sin, and thus the heavens were lifted from the earth as punishment. This began the divine plan for the salvation of mankind. Shortly after, Michael and a few of his fellow angels, Gabriel and Raphael, were granted the authority to interact with mankind directly, donning the title of saint.
After Mary was assumed into heaven, she blessed St. Michael with the duties and responsibilities that come with sainthood, making him the patron of law enforcement and all those who are righteous for the Lord, willing to sacrifice themselves for the good of their neighbors. The full power of the new general of the celestial armies was cemented, and the ultimate battle between good, evil, and the souls of mankind rages onward to this very day until the end of the earth.