Some facts about St. Michael, per wikipedia:
- He is generally presented as the field commander of the Army of God.
Michael is one of the principal angels in Abrahamic tradition; his name was said to have been the war-cry of the angels in the battle fought in heaven against Satan and his followers.
Michael together with St George became the patron of chivalry, and the patron of the first chivalric order of France, the Order of Saint Michael of 1469.
St Michael is also considered in many Christian circles as the patron saint of the warrior.
Police officers and soldiers, particularly paratroopers, regard him as their patron saint.
He is the angel of forbearance and mercy.
Michael is said to be the spirit of the planet Mercury or the Sun.
He is ruler over Sunday and Thursday.
He is the alchemy of motivation, activation and achievement.
He is said to be bringer of the gift of patience, and angel of careers, courage, achievements, ambitions, motivation, and life tasks.
Prayer to St. Michael
Sancte Michael Archangele,
defende nos in proelio.
contra nequitiam et insidias diaboli esto praesidium.
Imperet illi Deus, supplices deprecamur:
tuque, Princeps militiae coelestis,
Satanam aliosque spiritus malignos,
qui ad perditionem animarum pervagantur in mundo,
divina virtute, in infernum detrude.
Saint Michael the Archangel,
defend us in battle.
Be our protection against the wickedness and snares of the devil.
May God rebuke him, we humbly pray;
and do Thou, O Prince of the Heavenly Host —
by the Divine Power of God —
cast into hell Satan and all the evil spirits
who roam throughout the world seeking the ruin of souls.