U.S. Marine Corps · United States 
Dennis Riley
1977
Dennis Leo Riley served the U.S. Marine Corps.
How He Died
Manner
Accident
Cause
Multiple traumatic injuries
What Happened
Deputy Sheriff Dennis Riley was killed in an automobile crash at the intersection of Route 228 and U.S. Route 301 in Waldorf, Maryland. As he waited for a traffic light to change, a tractor-trailer fuel tanker skidded to a stop and overturned on his patrol car, killing him instantly. Deputy Riley was a United States Marine Corps Vietnam War veteran and served with the Charles County Sheriff's Office for five years.
Survivors
He was survived by his wife and four children.
Service Record
U.S. Marine Corps
Also Served
Charles County Sheriff's Office
Deputy Sheriff
In Our Keeping
Permanent identifier
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Record added
August 2, 2026
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Last updated
August 2, 2026
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