Maybe I got it mixed up...That was Meyer Lansky Jewish mafia that did that during WW2. He got Luciano out of prison as contingency for doing it as well.
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"Lucky Luciano realized that he could leverage his connections in Sicily to secure himself a little pardon action. He offered to help the U.S. government by putting them in contact with some of his men, who were well-acquainted with the ports, harbors, and inlets of Sicily."
The Allied forces quickly settled on the island of Sicily as their attack point in Italy. Although there was a strong military presence on the island, it was a softer target than mainland Italy. Plus, many of the residents of Sicily were members of the Mafiosi. Several years earlier, in the 1920s, Mussolini sent troops to Italy to kill, torture, and imprison Mafia members and their families, many of whom fled to the United States. The ones who stayed had a vendetta. The U.S. hoped to exploit that vendetta for their own benefit.
He also offered to persuade his people in Sicily to facilitate the Allied invasion of the island. It worked. Thanks to Luciano, the Allied commanders had intimate knowledge of the geography of the island, and insiders on Sicily prepared for the Allied invasion by planting explosives at Italian military bases. Operation Husky was put into motion on July 9, 1943, and the Allied troops managed to secure the island and seize the capital city of Palermo. For his help with Operation Husky, Lucky Luciano was granted a pardon and deported to Sicily. "
Mafia-Government Teams: All The Times The U.S. Government Worked With The Mafia