St. Michael led the fight against the demons in the Prœlium Magnum and cast them into hell. This Archangel is, moreover, the head of the Guardian Angels of individuals and institutions – he being the Guardian Angel of the institution par excellence, the Holy Roman Apostolic Catholic Church.
In him, therefore, two missions are linked together. God chose to use the Prince of the Celestial Militia as a shield against the devil, and wants him to be equally the shield of men and of the Holy Church. However, the Archangel is also a sword; he is not limited to defending, but he also defeats and casts into hell. This is the double mission of St. Michael.
During the Middle Ages, he was considered the first among knights, the celestial, loyal, strong, pure and victorious knight, as must be the knight who puts all his trust in God and in Our Lady.
Such is the admirable figure of St. Michael, whom we must consider as our ally in the battle to defend the Catholic Church.