Dan" Costigan, then active in the Parkhurst vice investigations, who became the first of many old-time officers either transferred, demoted or forced into retirement. He was, however, able to effectively counter the manpower shortage and rising crime in the post-World War I period by creating old-style "strong-arm squads". Enright specifically targeted illegal gambling establishments run by former U.S. Congressman and underworld figure "Honest" John Kelly, despite Kelly dying 35 years prior. During his first four years as police commissioner, assigned a uniformed patrolman to 24-hour watch outside Kelly's Vendome Clun on West 141st Street. Enright's continued harassment of Kelly's operations eventually forced him to sell the building to a Republican political organization. Enright was also able to institute a number of reforms and was greatly able to improve working conditions for police officers while in office. He allowed a day off for officers after every six days on duty, oversaw the buildup of large police relief funds and improved the pension system. He also reduced the number of precincts for better management, set up a special police unit to handle vice and gambling on a city-wide basis, reorganized the arrest-quota based merit system and established the first NYPD police camp at Tannersville, New York where ill or wounded officers could recover until they were able to return to duty. Other reforms he made included successfully petitioning the federal government to exempt police officers from being drafted, established the Missing Persons Bureau as a 24-hour service, and increased the number of policewomen on the force. He would, however, encounter heavy resistance in attempting to rid the department of corrupt and inefficient officers. The International Police Conference was developed by Enright in order to promote greater international cooperation among the world's police forces. He also advocated universal fingerprinting registration, not only for crime prevention but to resolve any kind of identity question, as well as convicted criminals being required to pay damages to both the victim and police with money earned while in prison. Prohibition, scandal and retirement During the early years of Prohibition, the police force came under fire for widespread corruption and its ineffectiveness in the enforcement of the Volstead Act and the rising violence from the "Bootleg Wars". In 1921, a grand jury and Legislative investigation committee looked into the department's activities regarding graft and police corruption. Partially as a result of their findings, Enright's resignation was demanded by