Roll of Honor
Incident
Assistant City Marshal William Hennecke was shot and killed by a man he was attempting to arrest for robbing a cigar store.
The suspect was convicted of Marshal Hennecke's murder and hanged April 12, 1900.
Asst. City Marshal Hennecke, On today, the 120th anniversary of your death I would just like to say thank you for your service and sacrifice for the citizens of Boonville.
R.I.P. USBP
Anonymous United States Border Patrol March 27th, 2020
In Our Keeping
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BO-US-MO-AE123D85- Stewardship
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- Added to badge.nw
- April 2, 2026
- Last updated
- July 23, 2026
Honored here by 1 sentinel - 1 tribute.
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Tributes
I never knew you. I am standing here anyway.
Assistant City Marshal Hennecke served with the Boonville Police Department.
Thank you for your service to the Boonville community. Gone but never to be forgotten.
Rest easy, Assistant City Marshal Hennecke.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Assistant City Marshal William Hennecke is one of 17,623 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 54.2% of all 32,508 officers honored here.
In MO, 516 of 813 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 63.5% of this state's fallen. That is 9.3 percentage points above the national rate of 54.2%.
National Cause Distribution
How Felonious compares to all causes of officer death in the memorial record. William Hennecke's cause is highlighted.
How William Hennecke Compares
Offender Outcome
Executed in 1900
When Felonious Deaths Occur
Monthly distribution of Felonious deaths across the full memorial record. William Hennecke is highlighted in Mar.
Weapons Used Against Officers
Most common weapons in felonious officer deaths. William Hennecke was killed by gun; unknown type.