Hitler's Japanese Confidant: General Oshima Hiroshi and Magic Intelligence, 1941-1945In 1940 the U. S. Army Signal Intelligence Service broke the Japanese diplomatic code. In 1975 Oshima Hiroshi, Japan's ambassador to Berlin during World War II, died, never knowing that the hundreds of messages he transmitted to Tokyo had been fully decoded by the Americans and whisked off to Washington, providing a major source of information for the Allies on Nazi activities. Resurrecting Oshima's decoded communications, which had remained