Frank McErlane (1894–1932) was a Prohibition-era Irish American gangster. He led the Saltis-McErlane Gang, allied with the Johnny Torrio-Al Capone Gang, against rival bootleggers, the Southside O'Donnell Brothers. He is credited with introducing the Thompson submachine gun to Chicago's underworld. The Illinois Crime Survey called him "the most brutal gunman who ever pulled a trigger in Chicago." Biography Born in Chicago, Illinois, Frank McErlane was first arrested in 1911, aged 17, and sent to Pontiac Prison in June 1913 for involvement in a car theft ring. Released on parole in March 1916, he was arrested eight months later as an accessory in the murder of Oak Park police officer Herman J. Malow, Jr. Sent to Joliet Prison for one year, he attempted to escape but was caught and spent another two years in prison. Shortly after the start of Prohibition, McErlane began running a gang with partner Joseph "Polack Joe" Saltis, operating in the "Back of the Yards" section of the South Side. In 1922, McErlane and Saltis allied with the Johnny "The Fox" Torrio-Al Capone Chicago Outfit against the Southside O'Donnell Brothers. McErlane was known as an especially ferocious assassin. Standing 5'8" and weighing 190 pounds, he was described as looking like a "butter and egg man". McErlane carried a rosary in his pockets along with a pistol. Frank was known to drink too much of what he sold and frequently slip into alcoholic psychosis. McErlane's face would grow redder with each drink, sending apprehension throughout his toughest criminal associates. During the 1923 "Beer Wars", McErlane would be credited with killing three O'Donnell gangsters in September of that year; Jerry O'Conner, George Bucher, and George Meegan. On December 1, 1923, two O'Donnell beer trucks were waylayed on the road between Chicago and Joliet. The occupants of one, William "Shorty" Egan and Thomas "Morrie" Keane, were shoved into a car with Frank McErlane and Willie Channell, who drove. Egan miraculously survived what happened next and gave this chilling account; Pretty soon the driver asks the guy with the shotgun, 'Where you gonna get rid of these guys?' The fat fellow laughs and says, 'I'll take care of that in a minute.' He was monkeying with his shotgun all the time. Pretty soon he turns around and points the gun at Keane. He didn't say a word but just let go straight at him. Keane got it square on the left