Roll of Honor
Incident
Deputy Sheriff Sergio Aleman was killed in an automobile accident on I-43, at Winnebago Street, at approximately 12:15 pm.
The sheriff's office motorist assistance truck struck the back of a flatbed tow truck that was stopped on the shoulder of the highway. Deputy Aleman was extricated from the vehicle and transported to Froedtert Hospital, where he was pronounced dead.
Deputy Aleman had served with the Milwaukee County Sheriff's Office for 18 years.
Survivors
He is survived by his wife and five children.
In Our Keeping
- Permanent identifier
BO-US-WI-6D1D286B- Stewardship
- Maintained by NeuraWeb Global Inc.
- 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.
Deputy Sheriff Aleman gave the Milwaukee County Sheriff's Office 18 years.
Thank you for your service to the Milwaukee community. Gone but never to be forgotten.
Rest easy, Deputy Sheriff Aleman.
— S. Vincent Anthony, U.S. Army 1985-1993
Agency
Service Record
Incident Details
Deputy Sheriff Sergio Aleman is one of 10,088 officers lost to accidents in the line of duty across the full record of this memorial — 31% of all 32,508 officers honored here.
In WI, 124 of 317 officers were lost to accidents in the line of duty — 39.1% of this state's fallen. That is 8.1 percentage points above the national rate of 31%.
At Milwaukee County Sheriff's Dept., 10 of 13 officers on record were lost to accidents in the line of duty — 76.9% of this agency's fallen.
National Cause Distribution
How Accident compares to all causes of officer death in the memorial record. Sergio Aleman's cause is highlighted.
How Sergio Aleman Compares
When Accident Deaths Occur
Monthly distribution of Accident deaths across the full memorial record. Sergio Aleman is highlighted in Jul.
Incident Location
Others Who Wore This Badge
12 officers from Milwaukee County Sheriff's Dept. are honored on badge.nw.
