Rome fell on 4 June 1944. When the news came that its fall was imminent, Pash was ordered from London to Italy. He flew back to Italy and entered the city with S-Force on 5 June. Pash took key scientists into custody and arranged for sites targeted by Alsos, including the University of Rome and the Consiglio Nazionale delle Ricerche, to be secured. The Alsos Mission to Italy was reconstituted under the command of Pash's deputy, Major Richard C. Ham, and Johnson and Major Robert R. Furman were sent from the United States to join him. They reached Rome on 19 June, and over the next weeks interviewed scientists including Edoardo Amaldi, Gian-Carlo Wick, and Francesco Giordani. The picture that the Alsos Mission built up indicated that the German effort was not far advanced.
