Operation Vigorous
The information leak cost the Allies many lives. For example, in June 1942, the British attempted to resupply Malta, which was under constant air attack and was being starved. The British determined to sail two supply convoys simultaneously in the hopes that if one were to become discovered, attacks upon it would distract the Axis from the other. Codenamed Operation Vigorous and Harpoon and sailing from Alexandria in the east and Gibraltar in the west, respectively, their sailing was timed with an effort by special forces teams to neutralize Axis ships and aircraft. Fellers efficiently reported all of that in his cable, No. 11119 dated June 11, which was intercepted in both Rome and by the German Military High Command Cipher Branch ("OKW Chiffrierabteilung"). It read, in part: