Incident Summary:

12/22/1970: A revolutionary leftist bombed National Guard trucks stationed at the Whitefish Bay Armory in Whitefish Bay, Wisconsin, United States. One truck was damaged but the resulting fire was extinguished before it had a chance to spread to the thirty other vehicles parked at the lot. There were many other bombings in the Milwaukee, Wisconsin area during this time period.



United States

North America

region/u.s. state:


Whitefish Bay

Location Details:
1225 East Henry Clay Street

Attack Information
Type of Attack (more) Bombing/Explosion
Successful Attack? (more) Yes
Target Information (more)
Target Type: Military
Name of Entity National Guard Armory
Specific Description Trucks at the Whitefish Bay Armory
Nationality of Target United States
Additional Information
Hostages No
Ransom No
Property Damage Yes
Extent of Property Damage Minor (likely < $1 million)
Value of Property Damage Unknown
Weapon Information
Type Sub-type
Explosives Time Fuse
Weapon Details
Four inch pipe bomb connected to a watch
Additional Information
Suicide Attack?No
Part of Multiple Incident?No
Criterion 1 (more) Yes
Criterion 2 (more) Yes
Criterion 3 (more) Yes
Additional Information The bomb went off at 1:30 AM. The perpetrator cut through a fence to sneak into the facilities. The bomb was placed above the gas tank of the truck, but the tank did not explode. However, some fuel did catch on fire. This was one of many bombings and attempted bombings that took place in the Milwaukee Wisconsin area during a five month period. (197010280002, 197007220002, 197009040004, 197006290002, 197007000001, 197008050001, and 197007210004).
Perpetrator Group Information
Group Name Claimed Responsibility
Left-Wing Militants No
Perpetrator Statistics
Number of Perpetrators 1
Number of Captured Perpetrators Unknown
Casualty Information
Total Number of Casualties 0 Fatalities / 0 Injured
Total Number of Fatalities 0
Number of U.S. Fatalities 0
Number of Perpetrator Fatalities 0
Total Number of Injured 0
Number of U.S. Injured 0
Number of Perpetrators Injured 0
Alex P. Dobish, "Bay Bomb Suspect Leaves Footprints," Milwaukee Journal, December 22, 1970.
Marcia McKnight Trick, "Chronology of Incidents of Terroristic, Quasi-Terroristic, and Political Violence in the United States: January 1965 to March 1976," National Advisory Committee on Criminal Justice Standards and Goals: Report of the Task Force on Disorders and Terrorism, 1976.