 Calosi was the inventor of the highly effective magnetic trigger used in the "Silvrifici Italiano Calosi" (SIC) torpedo, which the Germans used extensively.Savoldi and colleagues Donald Downes and Andre Pacatte located Calosi in Rome.They moved him, his commander Admiral Minisini, their wives, several technicians, and secret documents on the SIC to the Amalfi Coast, where they were picked up by US forces.