Saint Barbara is the patron saint of Marine artillerymen. She is also recognized by Marine Corps Aviation ordnancemen. Saint Michael is the patron saint of the armed forces.
The daughter of a wealthy pagan, Barbara was tortured and beheaded by her father after converting to Christianity around 300 A.D. Her father was struck dead by a bolt of lightning after he committed this crime. Saint Barbara was adopted by 17th century gunners and is today recognized as the patron saint of artillerymen. December 4th is recognized as Saint Barbara's Day; it is celebrated with a feast and the induction of new Marine artillerymen.