Lucky Luciano, with other Mafias, provided great network of informants and intelligence to allies in Operation Underworld and Operation Husky- Invasion of Sicily during WWII.
Operation Underworld (1942-1945):
After the SS Normandie incident, Navy contacted Meyer Lansky, a known associate of Lucky Luciano, to deal with possible Mussolini supporters within the predominantly Italian-American fisherman and dockworker population on the waterfront. Later, The State of New York, Luciano and the Navy struck a deal in which
- Luciano guaranteed full assistance of his organization in providing intelligence to the Navy.
- Luciano associate Albert Anastasia —who controlled the docks allegedly guaranteed no dockworker strikes throughout the war.
- Provide security for the war ships that were being built along the docks in New York Harbor.
In return, the State of New York agreed to commute Luciano’s sentence.
Operation Husky during WWII (July 1943) - Invasion of Sicily :
According to druglibrary,
Five days after the Allies landed in Sicily an American fighter plane
flew over the village of Villalba, about forty-five miles north of
General Patton's beachhead on the road to Palermo, and jettisoned a
canvas sack addressed to "Zu Calo." "Zu Calo," better known as Don
Calogero Vizzini, was the unchallenged leader of the Sicilian Mafia
and lord of the mountain region through which the American army would
be passing. The sack contained a yellow silk scarf emblazoned with a
large black L. The L, of course, stood for Lucky Luciano, and silk
scarves were a common form of identification used by mafiosi traveling
from Sicily to America. It was hardly surprising that Lucky Luciano
should be communicating with Don Calogero under such circumstances;
Luciano had been born less than fifteen miles from Villalba in Lercara
Fridi, where his mafiosi relatives still worked for Don Calogero.
In July the Civil Affairs Control Office of the U.S. army appointed
Don Calogero mayor of Villalba.
But this source says Don Calogero was made an honorary Colonel of the U.S. Army.
Tim Newark's Lucky Luciano: Mafia Murderer and Secret Agent can be consider as a rich source for Lucky Luciano's role in Sicily invasion.
Two key people involve in this was Commander Charles R. Haffenden of the U.S. Navy Office of Naval Intelligence and Governor Dewey.
Tim Newark writes:
Haffenden argued the case for Luciano, saying he could persuade
Governor Dewey to give him a pardon and send him to Sicily via a
neutral country, such as Portugal. Full of enthusiasm for the idea, he
said that Luciano recommended that U.S. forces land in the Golfo di
Castellammare—a favorite Mafia drug- smuggling haunt near Palermo and
home to many of those mobsters caught up in the gang war of the late
1920s. Wharton seriously considered the fantastic suggestion of
sending the U.S. head of organized crime to a theater of war but could
see this might well become a scandal after the war and reprimanded
Haffenden for a lack of political judgment. He was more than happy
just getting information from these gangsters without actually sending
them to fight with tommy guns on the beaches of their homeland.
Another source is Herlands report of 1954.
This was an investigation carried out at the direction of the Governor of New York Thomas E. Dewey to record the exact detail of the contact between US Naval Intelligence and New York’s Mafia mobsters. The US Navy were not happy with its findings, however, and the report remained secret for many decades afterwards. It is still unpublished.(SOURCE)
Luciano made many contacts available to naval intelligence which were helpful during Sicily invasion.