TY - BOOK AU - Drea,Edward J. TI - MacArthur's ULTRA: codebreaking and the war against Japan, 1942-1945 SN - 0700605762 (softbound) AV - D 767 .D66 1992 U1 - 940.54/26 20 PY - 1992/// CY - Lawrence, Kan. PB - University Press of Kansas KW - MacArthur, Douglas, KW - World War, 1939-1945 KW - Campaigns KW - Pacific Area KW - Cryptography KW - Military intelligence KW - History N1 - Includes bibliographical references (p. 275-282) and index; MacArthur's codebreaking organization -- ULTRA's trials and errors, 1942 -- Breaking into the Japanese Army codes, January 1943-January 1944 -- ULTRA's great victory : the Hollandia Operation, January-April 1944 -- Misreading ULTRA, May-September 1944 -- The missing division : Leyte, 1944 -- The numbers game : Luzon, January-June 1945 -- ULTRA as seer : uncovering Japanese plans for homeland defense, June-August 1945 -- Conclusion -- FIGURES: A sample page from the Japanese Army Code Book -- A typical Japanese Army message enciphered for transmission -- The Mainline Radio Network, Imperial General Headquarters -- The Japanese Army message in Figure 1.2 transmitted in Morse Code -- Abbreviated Army Chain of Command -- PHOTOGRAPHS: Willoughby visits Akin's headquarters, Bataan, 1942 -- The first American cryptanalysts in front of the Henry Street headquarters of Central Bureau, 1943 -- B-25s attack a Japanese transport during the Battle of the Bismarck Sea, 1943 -- Blamey visits the codebreakers at Twenty-One Henry Street, 1943 -- Planning the leap to Hollandia, 1944 -- Members of Central Bureau's Hut 7, 1944 -- Listening to the enemy--radio intercept operators of the 126th Signal Radio Intelligence Company, mid-1944 -- The underground radio communications center of 86th Division Headquarters near Ariake Bay in southern Kyushu -- A representative of each of the services at Central Bureau, 1945 -- MAPS: The Pacific Areas -- Papua New Guinea operations -- Southwest Pacific Actions, January-October 1943 -- CARTWHEEL Operations, October 1943-February 1944 -- Anticipated and actual Allied landings, April 1944 -- Allied landings, New Guinea, April-May 1944 -- Leyte -- Luzon operations -- Disposition of Forces, Kyushu -- TABLES: Japanese units identified by SWPA in the Southwest Pacific, December 31, 1942 -- U.S. Army Intelligence estimate of Japanese forces in the Southwest Pacific, December 31, 1942 -- ULTRA-identified Japanese Air Units at Wewak, August 1943 -- Estimated and actual Japanese Ground Order of Battle N2 - "In this book I assess the relationship between special intelligence and the campaigns of General Douglas MacArthur in the Pacific. During World War II, special intelligence, commonly referred to as ULTRA today, meant information obtained through monitoring, intercepting, and decoding enemy radio communications." - From the Preface UR - https://issuu.com/filipinasheritagelibrary/docs/rhc-017822?e=18015266/46772528 ER -