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Undersheriff

James Shelton Alsup

Toole County Sheriff's Department — Shelby, MT

Felonious

End of Watch December 22, 1935

Age 56

Tour of Duty 15 yrs

The Vigil Panel 71 ›

Gender Male

Incident Service The Sacrifice

Incident

Undersheriff James Alsup and Chief of Police Ed TenBroeck, of the Shelby Police Department, were shot and killed while attempting to arrest a gang of burglary suspects. One of the suspects was later shot and killed by a Toole County deputy. Undersheriff Alsup had served as the agency's undersheriff for one year and had previously served as sheriff for seven years. He had also served as chief of police of the Shelby Police Department for seven years.

Survivors

He was survived by his son.

In Our Keeping

Permanent identifier: BO-US-MT-AF266087
Stewardship: Maintained by NeuraWeb Global Inc.
Added to badge.nw: August 2, 2026
Last updated: August 2, 2026

Honored here by 1 sentinel - 1 tribute.

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Tributes

I never knew you. I am standing here anyway.
Undersheriff Alsup gave the Toole County Sheriff's Department 15 years.
Thank you for your service to the Shelby community. Gone but never to be forgotten.
Rest easy, Undersheriff Alsup.

— S. Vincent Anthony, U.S. Army 1985-1993

Agency

Department Toole County Sheriff's Department

Type Sheriff's Office

Location Shelby, Toole County, MT

Platform Identity tcso.toole.mt.us.gov.nw

Service Record

End of Watch December 22, 1935

Tour of Duty 15 yrs

Age 56

Gender Male

Incident Details

Cause Felonious

Weapon Gun

Undersheriff James Shelton Alsup is one of 17,559 officers killed feloniously — deliberately targeted and murdered in the line of duty across the full record of this memorial — 53.9% of all 32,586 officers honored here.

In MT, 93 of 142 officers were killed feloniously — deliberately targeted and murdered in the line of duty — 65.5% of this state's fallen. That is 11.6 percentage points above the national rate of 53.9%.

Toole County Sheriff's Department

of 1 officers

100% Felonious

MT — Statewide

of 142 officers

65.5% Felonious

Nationwide

17,559

of 32,586 officers

53.9% Felonious

National Cause Distribution

How Felonious compares to all causes of officer death in the memorial record. James Shelton Alsup's cause is highlighted.

Felonious

17,559 (53.9%)

Accident

10,094 (31%)

Illness

3,037 (9.3%)

Cardiac

1,306 (4%)

Undetermined

334 (1%)

Suicide

256 (0.8%)

How James Shelton Alsup Compares

Age at End of Watch

This officer

Avg for Felonious: 39.0 years

Years of Service

This officer

Avg for Felonious: 8.5 years

When Felonious Deaths Occur

Monthly distribution of Felonious deaths across the full memorial record. James Shelton Alsup is highlighted in Dec.

Jan

1,392

Feb

1,295

Mar

1,373

Apr

1,516

May

1,504

Jun

1,442

Jul

1,587

Aug

1,517

Sep

1,491

Oct

1,371

Nov

1,447

Dec

1,624

Weapons Used Against Officers

Most common weapons in felonious officer deaths. James Shelton Alsup was killed by gun.

Handgun

3,684

Gun

3,592

Gun; Unknown type

1,492

Shotgun

1,109

Rifle

935

Officer's handgun

909