US MARINE CORPS
Mario J Fierro
March 20, 1922—July 31, 1991
PFC
Life Timeline
69 years1922
Born
March 20, 1922
US MARINE CORPS
Service Record
World War II
World War II
Conflict
PFC
1991
Passed Away
July 31, 1991
Service Record
Verified fields from cemetery source data.
Branch
US MARINE CORPS
Rank
PFC
War / Conflict
World War II
Sourced from official cemetery data; last updated May 30, 2026.Learn more