U.S. Army
John Mc Mahon
March 13, 1917—March 21, 2010
CAPT
Life Timeline
93 years1917
Born
March 13, 1917
US ARMY
Service Record
World War II
World War II
Conflict
CAPT
2010
Passed Away
March 21, 2010
Service Record
Verified fields from cemetery source data.
Branch
US ARMY
Rank
CAPT
War / Conflict
World War II
Sourced from official cemetery data; last updated May 30, 2026.Learn more