St. Michael is one of my favourite saints. He's a fighter, a warrior, the field commander of God's Army.
St. Michael is amazing, because he was just an archangel. He was one of the lower ranking angels in the nine angelic choirs. Lucifer, ever after known as Satan, or the devil, was a Seraphim, the highest ranking angel in all of God's legions. Yet, it was the highest, purest, most perfect angel in the whole heavenly host that fell, and it was the archangel that obeyed God's laws and brought about his downfall. It is a great symbol of humility, that one so low should be brought so high.
Even though he is an archangel, the Greek fathers and many others place him over all the other angels, naming him as "the Prince of the Seraphim."
The name Michael means "Who is like God?" It illuminates his humility, that he refers all his glory, accomplishments, and honour back to God.
He is invoked as the patron and protector of the Catholic Church. He is the Patron saint of grocers, mariners, paratroopers, and police.
Other sites to read about St. Michael: