"Yes, exactly. The Germans put fuel and tanks and ammunition on ships in Naples and send them south. We go out and sink them. We sink nearly all of them, because we have broken the Italian C38m cipher and we know when they are leaving Naples. And lately we’ve been sinking just the very ones that are most crucial to Rommel’s efforts, because we have also broken his Chaffinch cipher and we know which ones he is complaining loudest about not having."