MacArthur's Ultra: Codebreaking and the War Against Japan, 1942-1945

Edward J. Drea

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MacArthur's Ultra: Codebreaking and the War Against Japan, 1942-1945

MacArthur s Ultra Codebreaking and the War Against Japan Cracking the enemy s radio code is a task so urgent and so difficult that it demands the military s best minds and most sophisticated technology But when the coded messages are in a language as comple

  • Title: MacArthur's Ultra: Codebreaking and the War Against Japan, 1942-1945
  • Author: Edward J. Drea
  • ISBN: 9780700605767
  • Page: 305
  • Format: Paperback
  • Cracking the enemy s radio code is a task so urgent and so difficult that it demands the military s best minds and most sophisticated technology But when the coded messages are in a language as complex as Japanese, decoding problems multiply dramatically.It took the U.S Army a full two years after the attack on Pearl Harbor to break the codes of the Japanese Imperial ArmCracking the enemy s radio code is a task so urgent and so difficult that it demands the military s best minds and most sophisticated technology But when the coded messages are in a language as complex as Japanese, decoding problems multiply dramatically.It took the U.S Army a full two years after the attack on Pearl Harbor to break the codes of the Japanese Imperial Army But by 1944 the U.S was decoding than 20,000 messages a month filled with information about enemy movements, strategy, fortifications, troop strengths, and supply convoys.In MacArthur s ULTRA, historian Edward Drea recounts the story behind the Army s painstaking decryption operation and its dramatic breakthrough He demonstrates how ULTRA intelligence from decrypted Japanese radio communications shaped MacArthur s operations in New Guinea and the Philippines and its effect on the outcome of World War II.From sources on both sides of the Pacific and national security agency declassified records, Drea has compiled a detailed listing of the ULTRA intelligence available to MacArthur By correlating the existing intelligence with MacArthur s operational decisions, Drea shows how MacArthur usedand misusedintelligence information He tells for the first time the story behind MacArthur s bold leap to Hollandia in 1944 and shows how ULTRA revealed the massive Japanese mobilization for what might have been had it occurred the bloodiest and most protracted engagement of the entire war the Allied invasion of Japan Drea also clarifies the role of ULTRA in Truman s decision to drop atomic bombs on Japan in 1945, and concludes that ULTRA shortened the war by six to ten months.

    • Free Read [Chick Lit Book] ☆ MacArthur's Ultra: Codebreaking and the War Against Japan, 1942-1945 - by Edward J. Drea ↠
      305 Edward J. Drea
    • thumbnail Title: Free Read [Chick Lit Book] ☆ MacArthur's Ultra: Codebreaking and the War Against Japan, 1942-1945 - by Edward J. Drea ↠
      Posted by:Edward J. Drea
      Published :2019-07-08T11:01:06+00:00

    One thought on “MacArthur's Ultra: Codebreaking and the War Against Japan, 1942-1945

    1. Patrick Eddington on said:

      MacArthur's greatest asset in the post-Corregidor escape period was the intelligence made available to him by American code breakers. As Drea points out, it wasn't luck or some kind of sixth sense that told MacArthur to bypass major Japanese strongholds on New Guinea and land 400 miles behind their lines at Hollandia in April 1944--it was signals intelligence (SIGINT, in Intelligence Community parlance). Drea tells a great story about MacArthur's frequently effective use of SIGINT in his campaig [...]

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