Handsome St. Michael Shield Medal is engraved with the Irish saying "Erin Go Bragh", meaning "Ireland Forever." St. Michael is considered the patron saint of chivalry and is also the patron saint of police officers, paramedics, and the military. This leads back to the medieval practice of offering prayers of protection from St. Michael.
St. Michael the Archangel, defend us in battle. Be our defense against the wickedness and snares of the Devil. May God rebuke him, we humbly pray, and do thou, O Prince of the heavenly hosts, by the power of God, thrust into hell Satan, and all the evil spirits, who prowl about the world seeking the ruin of souls. Amen.