The Modern Era on US Soil

Chicago Beer Wars

The decade-long war between the North Side Gang and the Chicago Outfit for control of Prohibition liquor, from the killing of Dean O'Banion and the ambush of Hymie Weiss to the St Valentine's Day Massacre.

The USS Arizona burning after the attack on Pearl Harbor, December 7, 1941. US National Archives (NARA 195617). Public domain.

Chicago's war for the beer trade

No city came to symbolise the violence of Prohibition more than Chicago. When national Prohibition took effect in 1920, control of the city's illegal beer and liquor supply became worth a fortune, and rival gangs fought openly to hold it. On one side stood the North Side Gang, largely Irish and Polish and rooted in the neighborhoods north of the Chicago River. On the other stood the South Side outfit built by Johnny Torrio and inherited by Al Capone, later known as the Chicago Outfit. Their struggle over breweries, distribution, and territory turned ordinary streets into ambush sites and made the drive-by shooting a familiar feature of the decade.

15
Engagements
1924 to 1931
Years

From O'Banion to the massacre

The war sharpened after the North Side leader Dean O'Banion was shot dead in his flower shop in 1924, a killing widely blamed on the Torrio and Capone faction. His successors, among them Hymie Weiss and Bugs Moran, struck back repeatedly, including a daylight motorcade attack on Capone's headquarters in Cicero. The bloodletting reached its notorious climax on 14 February 1929 with the St. Valentine's Day Massacre, when seven men connected to Moran's gang were lined up against a garage wall and shot dead by killers, some dressed as police. The massacre shocked the nation and drew federal attention to Capone, whose empire would soon be broken not by rivals but by a conviction for tax evasion.

Written by Aubrey Research from North Side Gang on Wikipedia, cited as a reference and not reproduced.

Where these engagements were fought

All 15 are placed on the map. Select a marker to see the engagement.

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Red markers are surveyed battlefields with a mapped boundary; navy markers are point-located engagements. Select a marker to open its page.

Documented engagements

EngagementStateYearForces or losses
St. Valentine's Day MassacreIL19297 killed
Assassination of Dion O'BanionIL1924O'Banion killed by 3 gunmen in his flower shop
Ambush of Johnny TorrioIL1925Torrio gravely wounded; survived
Assassination of Samuzzo 'Samoots' AmatunaIL1925Amatuna shot; died of wounds
Genna gang and police gun battle; death of Mike GennaIL1925Mike Genna + 2 police (Olson, Walsh) killed
First submachine gun attack of the beer wars (McErlane on Spike O'Donnell)IL1925Spike O'Donnell survived; first Thompson use
Murder of Tony GennaIL1925Tony Genna killed
Murder of Angelo GennaIL1925Angelo Genna killed
Machine-gun killing of William McSwiggin at CiceroIL1926McSwiggin, Doherty, Duffy killed
Assassination of Hymie WeissIL1926Weiss and Patrick Murray killed
Hawthorne Inn motorcade attackIL1926~1,000 rounds fired; Capone unhurt
Assassination of Antonio LombardoIL1928Lombardo killed in downtown crowd

Plus 3 further documented engagements in the Chicago Beer Wars record.

Engagements and locations are compiled from published sources: Wikipedia (CC BY-SA 4.0); Chronicling America (Library of Congress historic newspapers) (public domain).