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Central Bureau
The Central Bureau was one of two Allied signals intelligence (SIGINT) organisations in the South West Pacific area (SWPA) during World War II. Central Bureau was attached to the headquarters of the Supreme Commander, Southwest Pacific Area, General Douglas MacArthur. The role of the Bureau was to research and decrypt intercepted Imperial Japanese Army (land and air) traffic and work in close co-operation with other SIGINT centers in the United States, United Kingdom and India. Air activities included both army and navy air forces, as there was no independent Japanese air force.
The other unit was the joint Royal Australian Navy/United States Navy Fleet Radio Unit, Melbourne (FRUMEL), which reported directly to CINCPAC (Admiral Chester Nimitz) in Hawaii and the Chief of Naval Operations (Admiral Ernest King) in Washington, D.C.
Central Bureau is the precursor to the Defense Signals Bureau, which after a number of name changes is (from 2013) called the Australian Signals Directorate.
Central Bureau comprised:
Beginning in January 1942, U.S. Navy stations in Hawaii (Station HYPO), Cavite/Corregidor (Station CAST) and OP-20-G (Station NEGAT, at Washington) began issuing formal intelligence decrypts far in advance of the U.S. Army or Central Bureau.
General MacArthur had his own signals intelligence unit, Station 6, while he was in command in the Philippines before the start of the war, and was not fully dependent on the U.S. Navy for that type of information. However, most of the signals intelligence he received was from the U.S. Navy's Station CAST, originally at Cavite in the Manila Navy Yard, and evacuated to Corregidor Island after Japanese successes. Prior to the war, it had to be sent by courier, which caused some delay and annoyance.
General MacArthur escaped from Corregidor in the Philippines in a PT boat to Mindanao and flew to Australia from Del Monte on a Boeing B-17 Flying Fortress. He made his way to Melbourne, arriving there on 22 March 1942.
The Signals Intelligence units operating in Australia at the time of MacArthur's arrival in Melbourne were as follows:
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Central Bureau
The Central Bureau was one of two Allied signals intelligence (SIGINT) organisations in the South West Pacific area (SWPA) during World War II. Central Bureau was attached to the headquarters of the Supreme Commander, Southwest Pacific Area, General Douglas MacArthur. The role of the Bureau was to research and decrypt intercepted Imperial Japanese Army (land and air) traffic and work in close co-operation with other SIGINT centers in the United States, United Kingdom and India. Air activities included both army and navy air forces, as there was no independent Japanese air force.
The other unit was the joint Royal Australian Navy/United States Navy Fleet Radio Unit, Melbourne (FRUMEL), which reported directly to CINCPAC (Admiral Chester Nimitz) in Hawaii and the Chief of Naval Operations (Admiral Ernest King) in Washington, D.C.
Central Bureau is the precursor to the Defense Signals Bureau, which after a number of name changes is (from 2013) called the Australian Signals Directorate.
Central Bureau comprised:
Beginning in January 1942, U.S. Navy stations in Hawaii (Station HYPO), Cavite/Corregidor (Station CAST) and OP-20-G (Station NEGAT, at Washington) began issuing formal intelligence decrypts far in advance of the U.S. Army or Central Bureau.
General MacArthur had his own signals intelligence unit, Station 6, while he was in command in the Philippines before the start of the war, and was not fully dependent on the U.S. Navy for that type of information. However, most of the signals intelligence he received was from the U.S. Navy's Station CAST, originally at Cavite in the Manila Navy Yard, and evacuated to Corregidor Island after Japanese successes. Prior to the war, it had to be sent by courier, which caused some delay and annoyance.
General MacArthur escaped from Corregidor in the Philippines in a PT boat to Mindanao and flew to Australia from Del Monte on a Boeing B-17 Flying Fortress. He made his way to Melbourne, arriving there on 22 March 1942.
The Signals Intelligence units operating in Australia at the time of MacArthur's arrival in Melbourne were as follows: