 Despite being forced to flee Chicago multiple times throughout the gang war, Aiello eventually took control of the Unione Siciliana in 1929, and ranked seventh among the Chicago Crime Commission's list of top "public enemies". Aiello was killed after Capone gunmen ambushed him as he exited a Chicago apartment building where he had been hiding out, shooting him 59 times. After his death the Chicago Tribune described Aiello as "the toughest gangster in Chicago, and one of the toughest in the country".
