US NAVY
John Marshall Knapp
April 6, 1899—May 14, 1945
RM3
Life Timeline
46 years1899
Born
April 6, 1899
US NAVY
Service Record
World War I
World War I
Conflict
RM3
1945
Passed Away
May 14, 1945
Service Record
Verified fields from cemetery source data.
Branch
US NAVY
Rank
RM3
War / Conflict
World War I
Sourced from official cemetery data; last updated May 30, 2026.Learn more