76-607: Pine Gap is a joint United States-Australian satellite communications and signals intelligence surveillance base and Australian Earth station approximately 18 km (11 mi) south-west of the town of Alice Springs . It is jointly operated by Australia and the United States, and since 1988 it has been officially called the Joint Defence Facility Pine Gap ( JDFPG ); previously, it was known as Joint Defence Space Research Facility . It plays
152-540: A DEFCON 3 force-wide alert. Australian personnel at the base, the Australian Government and Prime Minister Gough Whitlam were not informed of the alert. Since the end of the Cold War in 1991 and the rise of the war on terror in 2001, the base has seen a refocusing from mere nuclear treaty monitoring and missile launch detection, to become a vital warfighting base for US military forces. In 1999, with
228-426: A central point, or perhaps to a distributed system in which all participate, such that the information can be correlated and a location computed. Modern SIGINT systems, therefore, have substantial communications among intercept platforms. Even if some platforms are clandestine, there is still a broadcast of information telling them where and how to look for signals. A United States targeting system under development in
304-472: A confirmation, followed by observation of artillery fire, may identify an automated counterbattery fire system. A radio signal that triggers navigational beacons could be a radio landing aid for an airstrip or helicopter pad that is intended to be low-profile. Patterns do emerge. A radio signal with certain characteristics, originating from a fixed headquarters, may strongly suggest that a particular unit will soon move out of its regular base. The contents of
380-691: A crucial role in supporting the intelligence activities and military operations of the US around the world. The base's role has caused much controversy in Australia leading to various protests. The station is jointly run by the Australian Defence Force ( Australian Signals Directorate ), the US Central Intelligence Agency (CIA), US National Security Agency (NSA), and US National Reconnaissance Office (NRO) and
456-458: A different ECCM way to identify frequencies not being jammed or not in use. The earliest, and still common, means of direction finding is to use directional antennas as goniometers , so that a line can be drawn from the receiver through the position of the signal of interest. (See HF/DF .) Knowing the compass bearing, from a single point, to the transmitter does not locate it. Where the bearings from multiple points, using goniometry, are plotted on
532-640: A lower level, German cryptanalysis, direction finding, and traffic analysis were vital to Rommel's early successes in the Western Desert Campaign until British forces tightened their communications discipline and Australian raiders destroyed his principle SIGINT Company. The United States Department of Defense has defined the term "signals intelligence" as: Being a broad field, SIGINT has many sub-disciplines. The two main ones are communications intelligence (COMINT) and electronic intelligence (ELINT). A collection system has to know to look for
608-407: A map, the transmitter will be located at the point where the bearings intersect. This is the simplest case; a target may try to confuse listeners by having multiple transmitters, giving the same signal from different locations, switching on and off in a pattern known to their user but apparently random to the listener. Individual directional antennas have to be manually or automatically turned to find
684-648: A particular signal. "System", in this context, has several nuances. Targeting is the process of developing collection requirements : First, atmospheric conditions, sunspots , the target's transmission schedule and antenna characteristics, and other factors create uncertainty that a given signal intercept sensor will be able to "hear" the signal of interest, even with a geographically fixed target and an opponent making no attempt to evade interception. Basic countermeasures against interception include frequent changing of radio frequency , polarization , and other transmission characteristics. An intercept aircraft could not get off
760-515: A peace-time codebreaking agency should be created. The Government Code and Cypher School (GC&CS) was the first peace-time codebreaking agency, with a public function "to advise as to the security of codes and cyphers used by all Government departments and to assist in their provision", but also with a secret directive to "study the methods of cypher communications used by foreign powers". GC&CS officially formed on 1 November 1919, and produced its first decrypt on 19 October. By 1940, GC&CS
836-523: A precise picture of the normal operation of the High Seas Fleet , to infer from the routes they chose where defensive minefields had been placed and where it was safe for ships to operate. Whenever a change to the normal pattern was seen, it immediately signalled that some operation was about to take place, and a warning could be given. Detailed information about submarine movements was also available. The use of radio-receiving equipment to pinpoint
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#1732787467433912-401: A radar is operating. Once the radar is known to be in the area, the next step is to find its location. If operators know the probable frequencies of transmissions of interest, they may use a set of receivers, preset to the frequencies of interest. These are the frequency (horizontal axis) versus power (vertical axis) produced at the transmitter, before any filtering of signals that do not add to
988-524: A reference to Pine Gap. On 6 March 2024, Australian YouTubers Aleksa Vulović , Alex Apollonov and Jordan Shanks uploaded a video to Vulović's channel Boy Boy, in which the trio attempted to enter Pine Gap. The trio were briefly detained and questioned after being denied entry at the front gate. The next day, upon arrival at Sydney Airport , the trio were further questioned by the Australian Federal Police immediately after leaving
1064-401: A safe distance from the user of the transmitter. When locations are known, usage patterns may emerge, from which inferences may be drawn. Traffic analysis is the discipline of drawing patterns from information flow among a set of senders and receivers, whether those senders and receivers are designated by location determined through direction finding , by addressee and sender identifications in
1140-404: A sensor is unique. MASINT then becomes more informative, as individual transmitters and antennas may have unique side lobes, unintentional radiation, pulse timing, etc. Network build-up , or analysis of emitters (communication transmitters) in a target region over a sufficient period of time, enables creation of the communications flows of a battlefield. COMINT ( com munications int elligence)
1216-426: A tactical SIGINT requirement, whereas the larger aircraft tend to be assigned strategic/national missions. Before the detailed process of targeting begins, someone has to decide there is a value in collecting information about something. While it would be possible to direct signals intelligence collection at a major sports event, the systems would capture a great deal of noise, news signals, and perhaps announcements in
1292-478: A tank battalion or tank-heavy task force. Another set of transmitters might identify the logistic net for that same unit. An inventory of ELINT sources might identify the medium - and long-range counter-artillery radars in a given area. Signals intelligence units will identify changes in the EOB, which might indicate enemy unit movement, changes in command relationships, and increases or decreases in capability. Using
1368-411: A vehicle. If these are regular reports over a period of time, they might reveal a patrol pattern. Direction-finding and radio frequency MASINT could help confirm that the traffic is not deception. The EOB buildup process is divided as following: Separation of the intercepted spectrum and the signals intercepted from each sensor must take place in an extremely small period of time, in order to separate
1444-578: Is Amplitude comparison . An alternative to tunable directional antennas or large omnidirectional arrays such as the Wullenweber is to measure the time of arrival of the signal at multiple points, using GPS or a similar method to have precise time synchronization. Receivers can be on ground stations, ships, aircraft, or satellites, giving great flexibility. A more accurate approach is Interferometer. Modern anti-radiation missiles can home in on and attack transmitters; military antennas are rarely
1520-575: Is a political thriller , portraying the lives of the members of the joint American–Australian intelligence team. In the novel, The Secret History of Twin Peaks by Mark Frost , President Richard Nixon claims that Pine Gap is actually the site of an underground facility constructed by extraterrestrials . In 1982 the Australian band Midnight Oil released " Power and the Passion ", which contains
1596-644: Is a key contributor to the NSA's global interception/surveillance effort, which included the ECHELON program. The classified NRO name for the Pine Gap base is Australian Mission Ground Station (AMGS), while the unclassified cover term for the NSA function of the facility is RAINFALL. The facilities at the base consist of a massive computer complex with 38 radomes protecting radio dishes and operates with over 800 employees. Former NSA employee David Rosenberg indicated that
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#17327874674331672-417: Is a sub-category of signals intelligence that engages in dealing with messages or voice information derived from the interception of foreign communications. COMINT is commonly referred to as SIGINT, which can cause confusion when talking about the broader intelligence disciplines. The US Joint Chiefs of Staff defines it as "Technical information and intelligence derived from foreign communications by other than
1748-415: Is acquired by a given country. Knowledge of physics and electronic engineering further narrows the problem of what types of equipment might be in use. An intelligence aircraft flying well outside the borders of another country will listen for long-range search radars, not short-range fire control radars that would be used by a mobile air defense. Soldiers scouting the front lines of another army know that
1824-543: Is in the general area of the signal. The owner of the transmitter can assume someone is listening, so might set up tank radios in an area where he wants the other side to believe he has actual tanks. As part of Operation Quicksilver , part of the deception plan for the invasion of Europe at the Battle of Normandy , radio transmissions simulated the headquarters and subordinate units of the fictitious First United States Army Group (FUSAG), commanded by George S. Patton , to make
1900-485: Is seen delivering heavy machinery to JDFPG in season 4's 11th episode of series Outback Truckers . Pine Gap features prominently in the third and fourth thriller novels of the Jack West Jr. series— The Five Greatest Warriors and The Four Legendary Kingdoms , respectively—by the Australian writer Matthew Reilly . Pine Gap is featured in the 2018 Australian television series of the same name . The series
1976-581: Is strategically significant because it controls United States spy satellites as they pass over one-third of the globe, including China, North Korea, the Asian parts of Russia, and the Middle East. Central Australia was chosen because it was too remote for spy ships passing in international waters to intercept its signals. The facility has become a key part of the local economy. Pine Gap's activities have become more military-focused over time. One of its roles
2052-871: Is synonymous with the term Outback . In a modern, more formal sense it can refer to the administrative region used by the Northern Territory government, as of 2022. Centralia is another term associated with the area, most commonly used by locals. There are six regions in the Northern Territory for the purposes of economic planning, as defined by the Northern Territory Government : This region has an estimated population of total regional population of 41,000, serviced by Alice Springs (population 28,000). The town also services parts of South Australia, Western Australia and Queensland. Local Government Areas (LGAs) make up
2128-443: Is to detect and geolocate the source of electronic signals, such as those emitted by mobile phones . This information is used by Five Eyes to identify and geolocate targets of interest, which it can then attack using special forces or lethal unmanned drones, for example. Since it was established, Pine Gap has assisted the US in planning for nuclear war . Leaked Department of Defence documents revealed that satellites controlled by
2204-511: Is usually encrypted , signals intelligence may necessarily involve cryptanalysis (to decipher the messages). Traffic analysis —the study of who is signaling to whom and in what quantity—is also used to integrate information, and it may complement cryptanalysis. Electronic interceptions appeared as early as 1900, during the Boer War of 1899–1902. The British Royal Navy had installed wireless sets produced by Marconi on board their ships in
2280-510: The Admiralty ; Room 40 . An interception service known as 'Y' service , together with the post office and Marconi stations, grew rapidly to the point where the British could intercept almost all official German messages. The German fleet was in the habit each day of wirelessing the exact position of each ship and giving regular position reports when at sea. It was possible to build up
2356-527: The Battle of Jutland as the British fleet was sent out to intercept them. The direction-finding capability allowed for the tracking and location of German ships, submarines, and Zeppelins . The system was so successful that by the end of the war, over 80 million words, comprising the totality of German wireless transmission over the course of the war, had been intercepted by the operators of the Y-stations and decrypted. However, its most astonishing success
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2432-716: The Russian Army ’s advance early in World War I and led to their disastrous defeat by the Germans under Ludendorff and Hindenburg at the Battle of Tannenberg . In 1918, French intercept personnel captured a message written in the new ADFGVX cipher , which was cryptanalyzed by Georges Painvin . This gave the Allies advance warning of the German 1918 Spring Offensive . The British in particular, built up great expertise in
2508-942: The September 11 attacks . The Menwith Hill Station (MHS) in the UK is operated by the NSA and also serves as ground station for these satellite missions. One of Pine Gap's primary functions is to locate radio signals in the Eastern Hemisphere , with the collected information fed into the US drone program. This was confirmed by an NSA document from 2013, which says that Pine Gap plays a key role in providing geolocation data for intelligence purposes, as well as for military operations, including air strikes. On 11 July 2013, documents revealed through former NSA analyst Edward Snowden showed that Pine Gap, amongst three other locations in Australia and one in New Zealand, contributed to
2584-657: The Australian Government refusing to give details to an Australian Senate committee about the relevant treaties, intelligence expert Professor Des Ball from the Australian National University was called to give an outline of Pine Gap. According to Ball, since 9 December 1966 when the Australian and United States governments signed the Pine Gap treaty, Pine Gap had grown from the original two antennas to about 18 in 1999, and 38 by 2017. The number of staff had increased from around 400 in
2660-548: The COMINT gathering method enables the intelligence officer to produce an electronic order of battle by traffic analysis and content analysis among several enemy units. For example, if the following messages were intercepted: This sequence shows that there are two units in the battlefield, unit 1 is mobile, while unit 2 is in a higher hierarchical level, perhaps a command post. One can also understand that unit 1 moved from one point to another which are distant from each 20 minutes with
2736-438: The German defense think that the main invasion was to come at another location. In like manner, fake radio transmissions from Japanese aircraft carriers, before the Battle of Pearl Harbor , were made from Japanese local waters, while the attacking ships moved under strict radio silence. Traffic analysis need not focus on human communications. For example, a sequence of a radar signal, followed by an exchange of targeting data and
2812-510: The NSA's global interception and collection of internet and telephone communications, which involves systems like XKEYSCORE . Journalist Brian Toohey states that Pine Gap intercepts electronic communications from Australian citizens including phone calls, emails and faxes as a consequence of the technology it uses. According to documents published in August 2017, Pine Gap is used as a ground station for spy satellites on two secret missions: After
2888-647: The Pine Gap and Joint Defence Facility Nurrungar facilities were used during the Vietnam War to pinpoint targets for bombings in Cambodia . Joint Defence Facility Nurrungar relayed warnings of Scud missile launches to the Israel Defence Forces (IDF) during the Gulf War in the early 1990s. By 2003, this function had been fully transferred to Pine Gap. Location data provided by Pine Gap
2964-599: The Russian fleet prepared for conflict with Japan in 1904, the British ship HMS Diana stationed in the Suez Canal intercepted Russian naval wireless signals being sent out for the mobilization of the fleet, for the first time in history. Over the course of the First World War , a new method of signals intelligence reached maturity. Russia’s failure to properly protect its communications fatally compromised
3040-730: The Signals Analysis Section, from which Australians were barred until 1980. Each morning the Joint Reconnaissance Schedule Committee meets to determine what the satellites will monitor over the next 24 hours. With the closing of Nurrungar in 1999, an area in Pine Gap was set aside for the United States Air Force 's control station for Defense Support Program satellites that monitor heat emissions from missiles, giving first warning of ballistic missile launches. In 2004,
3116-641: The US could cancel the agreement on giving one year's notice. Operations started in 1970 when about 400 American families moved to Central Australia . The function of the base when it first opened was to monitor military activities such as missile tests in Russia, China, Pakistan, Japan, Korea, and India.. The base was placed on nuclear alert by the US Government during the Yom Kippur War in 1973 when US secretary of state Henry Kissinger issued
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3192-797: The White House, [and] a kind of Chile [coup] was set in motion", with the CIA and MI6 working together to get rid of the Prime Minister. On 11 November 1975, the day Whitlam was scheduled to brief the Australian Parliament on the secret CIA presence in Australia, as well as it being "the last day of action if an election of any kind was to be held before Christmas", he was dismissed from office by ceremonial representative of monarch Elizabeth II , Governor-General John Kerr , using reserve powers, described as "archaic" by critics of
3268-453: The actual information is at 800 kHz and 1.2 MHz. Real-world transmitters and receivers usually are directional. In the figure to the left, assume that each display is connected to a spectrum analyzer connected to a directional antenna aimed in the indicated direction. Spread-spectrum communications is an electronic counter-countermeasures (ECCM) technique to defeat looking for particular frequencies. Spectrum analysis can be used in
3344-811: The aircraft. The video featured an interview with Donna Mulhearn, one of the six members of the Christians Against All Terrorism group who attempted to sneak into Pine Gap in 2006 , along with the discussion of the alleged CIA involvement in the Whitlam dismissal. Signals intelligence Signals intelligence ( SIGINT ) is the act and field of intelligence-gathering by interception of signals , whether communications between people ( communications intelligence —abbreviated to COMINT ) or from electronic signals not directly used in communication ( electronic intelligence —abbreviated to ELINT ). As classified and sensitive information
3420-623: The base began operating a new satellite system known as the Space-Based Infrared System , which is a vital element of US missile defence. Since the end of the Cold War, the station has mainly been employed to intercept and record weapons and communications signals from countries in Asia, such as China and North Korea. The station was active in supporting the wars in Yugoslavia , Afghanistan and Iraq and every US war since
3496-506: The broader organizational order of battle . EOB covers both COMINT and ELINT. The Defense Intelligence Agency maintains an EOB by location. The Joint Spectrum Center (JSC) of the Defense Information Systems Agency supplements this location database with five more technical databases: For example, several voice transmitters might be identified as the command net (i.e., top commander and direct reports) in
3572-545: The chief of the facility was a senior CIA officer at the time of his service there. Australian personnel stationed at the installation have access to the entire facility (depending on role and clearance). However, all Australian personnel are banned from entering the NSA 's cryptology room, similarly how all US Personnel are banned from the Australian Signals Directorate 's cryptology room. The location
3648-400: The creation of a US satellite surveillance base in Australia, to be titled the "Joint Defence Space Research Facility". The purpose of the facility was initially referred to in public as "space research". It was officially referred to as a "joint space research facility" until 1988. The Pine Gap treaty was signed on 9 December 1966 and stated that, after an initial nine years, either Australia or
3724-446: The decision to target is made, the various interception points need to cooperate, since resources are limited. Knowing what interception equipment to use becomes easier when a target country buys its radars and radios from known manufacturers, or is given them as military aid . National intelligence services keep libraries of devices manufactured by their own country and others, and then use a variety of techniques to learn what equipment
3800-571: The decision. In 2020, previously confidential private correspondences between the Palace and the Governor-General were released. In one of the letters, John Kerr describes his alleged CIA connections as "Nonsense of course", and assured the Queen of his continued loyalty. During his trial for espionage, US defence industry employee Christopher Boyce made a number of allegations related to
3876-469: The different signals to different transmitters in the battlefield. The complexity of the separation process depends on the complexity of the transmission methods (e.g., hopping or time-division multiple access (TDMA)). By gathering and clustering data from each sensor, the measurements of the direction of signals can be optimized and get much more accurate than the basic measurements of a standard direction finding sensor. By calculating larger samples of
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#17327874674333952-454: The early 1980s to 600 in the early 1990s and then to 800 in 2017, the biggest expansion since the end of the Cold War. Ball described the facility as the ground control and processing station for geosynchronous satellites engaged in signals intelligence collection, outlining four categories of signals collected: Ball described the operational area as containing three sections: Satellite Station Keeping Section, Signals Processing Station and
4028-512: The fronts, that we won the war!" Supreme Allied Commander, Dwight D. Eisenhower , at the end of the war, described Ultra as having been "decisive" to Allied victory. Official historian of British Intelligence in World War II Sir Harry Hinsley argued that Ultra shortened the war "by not less than two years and probably by four years"; and that, in the absence of Ultra, it is uncertain how the war would have ended. At
4104-420: The ground if it had to carry antennas and receivers for every possible frequency and signal type to deal with such countermeasures. Second, locating the transmitter's position is usually part of SIGINT. Triangulation and more sophisticated radio location techniques, such as time of arrival methods, require multiple receiving points at different locations. These receivers send location-relevant information to
4180-459: The inexplicable March 2014 disappearance of Malaysia Airlines flight MH 370 , a Boeing 777 passenger jet, authorities suggested that Pine Gap or Jindalee (JORN) radar site might have data to help locate the missing aircraft. Gough Whitlam , Prime Minister of Australia (between 1972 and 1975), considered closing the base. Victor Marchetti , a former CIA officer who had helped set up the facility, said that this consideration "caused apoplexy in
4256-448: The information being transmitted. Received energy on a particular frequency may start a recorder, and alert a human to listen to the signals if they are intelligible (i.e., COMINT). If the frequency is not known, the operators may look for power on primary or sideband frequencies using a spectrum analyzer . Information from the spectrum analyzer is then used to tune receivers to signals of interest. For example, in this simplified spectrum,
4332-608: The intelligence gathered at Pine Gap (including claiming that the CIA was involved in the Whitlam Dismissal). He stated that, despite the US agreeing to share intelligence from Pine Gap with Australia, he was told that the US would withhold some information from the Australians. Boyce also said that Pine Gap was monitoring telephone calls and telex messages to and from Australia of a political nature. Peter "Turbo" Teatoff
4408-725: The intended recipients". Central Australia Central Australia , also sometimes referred to as the Red Centre , is an inexactly defined region associated with the geographic centre of Australia . In its narrowest sense it describes a region that is limited to the town of Alice Springs and its immediate surrounds including the MacDonnell Ranges . Commonly, it refers to an area up to 600 km (370 mi) from Alice Springs, in every direction. In its broadest use it can include almost any region in inland Australia that has remained relatively undeveloped, and in this sense
4484-541: The late 1890s, and the British Army used some limited wireless signalling. The Boers captured some wireless sets and used them to make vital transmissions. Since the British were the only people transmitting at the time, the British did not need special interpretation of the signals that they were. The birth of signals intelligence in a modern sense dates from the Russo-Japanese War of 1904–1905. As
4560-541: The late 1990s, PSTS, constantly sends out information that helps the interceptors properly aim their antennas and tune their receivers. Larger intercept aircraft, such as the EP-3 or RC-135 , have the on-board capability to do some target analysis and planning, but others, such as the RC-12 GUARDRAIL , are completely under ground direction. GUARDRAIL aircraft are fairly small and usually work in units of three to cover
4636-574: The location of any single transmitter was also developed during the war. Captain H.J. Round , working for Marconi , began carrying out experiments with direction-finding radio equipment for the army in France in 1915. By May 1915, the Admiralty was able to track German submarines crossing the North Sea. Some of these stations also acted as 'Y' stations to collect German messages, but a new section
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#17327874674334712-564: The message need not be known to infer the movement. There is an art as well as science of traffic analysis. Expert analysts develop a sense for what is real and what is deceptive. Harry Kidder , for example, was one of the star cryptanalysts of World War II, a star hidden behind the secret curtain of SIGINT. Generating an electronic order of battle (EOB) requires identifying SIGINT emitters in an area of interest, determining their geographic location or range of mobility, characterizing their signals, and, where possible, determining their role in
4788-410: The message, or even MASINT techniques for "fingerprinting" transmitters or operators. Message content other than the sender and receiver is not necessary to do traffic analysis, although more information can be helpful. For example, if a certain type of radio is known to be used only by tank units, even if the position is not precisely determined by direction finding, it may be assumed that a tank unit
4864-492: The newly emerging field of signals intelligence and codebreaking (synonymous with cryptanalysis). On the declaration of war, Britain cut all German undersea cables. This forced the Germans to communicate exclusively via either (A) a telegraph line that connected through the British network and thus could be tapped; or (B) through radio which the British could then intercept. Rear Admiral Henry Oliver appointed Sir Alfred Ewing to establish an interception and decryption service at
4940-461: The other side will be using radios that must be portable and not have huge antennas. Even if a signal is human communications (e.g., a radio), the intelligence collection specialists have to know it exists. If the targeting function described above learns that a country has a radar that operates in a certain frequency range, the first step is to use a sensitive receiver, with one or more antennas that listen in every direction, to find an area where such
5016-604: The region: In more general usage, or when referring to the flora and fauna of Australia, the term "central Australia" may refer to a large area in the interior of the continent, including the Lake Eyre Basin , which stretches across three states and the NT. For many, the term " outback " is almost synonymous with central Australia. The region has a desert environment, meaning it is very dry, receiving on average just 150 millimetres (6 in) of rainfall annually. Most of
5092-417: The sensor's output data in near real-time, together with historical information of signals, better results are achieved. Data fusion correlates data samples from different frequencies from the same sensor, "same" being confirmed by direction finding or radiofrequency MASINT. If an emitter is mobile, direction finding, other than discovering a repetitive pattern of movement, is of limited value in determining if
5168-509: The signal direction, which may be too slow when the signal is of short duration. One alternative is the Wullenweber array technique. In this method, several concentric rings of antenna elements simultaneously receive the signal, so that the best bearing will ideally be clearly on a single antenna or a small set. Wullenweber arrays for high-frequency signals are enormous, referred to as "elephant cages" by their users. A more advance approach
5244-451: The stadium. If, however, an anti-terrorist organization believed that a small group would be trying to coordinate their efforts using short-range unlicensed radios at the event, SIGINT targeting of radios of that type would be reasonable. Targeting would not know where in the stadium the radios might be located or the exact frequency they are using; those are the functions of subsequent steps such as signal detection and direction finding. Once
5320-509: The story of Operation SALAM , László Almásy 's mission across the desert behind Allied lines in 1942. Prior to the Normandy landings on D-Day in June 1944, the Allies knew the locations of all but two of Germany's fifty-eight Western Front divisions. Winston Churchill was reported to have told King George VI : "It is thanks to the secret weapon of General Menzies , put into use on all
5396-562: The whole of the British forces in World War II came under the code name " Ultra ", managed from Government Code and Cypher School at Bletchley Park . Properly used, the German Enigma and Lorenz ciphers should have been virtually unbreakable, but flaws in German cryptographic procedures, and poor discipline among the personnel carrying them out, created vulnerabilities which made Bletchley's attacks feasible. Bletchley's work
5472-595: Was created within Room 40 to plot the positions of ships from the directional reports. Room 40 played an important role in several naval engagements during the war, notably in detecting major German sorties into the North Sea . The battle of Dogger Bank was won in no small part due to the intercepts that allowed the Navy to position its ships in the right place. It played a vital role in subsequent naval clashes, including at
5548-686: Was essential to defeating the U-boats in the Battle of the Atlantic , and to the British naval victories in the Battle of Cape Matapan and the Battle of North Cape . In 1941, Ultra exerted a powerful effect on the North African desert campaign against German forces under General Erwin Rommel . General Sir Claude Auchinleck wrote that were it not for Ultra, "Rommel would have certainly got through to Cairo". Ultra decrypts featured prominently in
5624-712: Was in decrypting the Zimmermann Telegram , a telegram from the German Foreign Office sent via Washington to its ambassador Heinrich von Eckardt in Mexico. With the importance of interception and decryption firmly established by the wartime experience, countries established permanent agencies dedicated to this task in the interwar period. In 1919, the British Cabinet's Secret Service Committee, chaired by Lord Curzon , recommended that
5700-649: Was used by the US to kill al-Qaeda and the Taliban soldiers with drones. US drones have also killed hundreds of civilians. During the 2023 Israel–Hamas war , it is alleged Pine Gap provided the IDF with communications and electronic intelligence which it had collected using two geosynchronous Orion satellites located over the Indian Ocean. In late 1966, during the Cold War , a joint US–Australian treaty called for
5776-680: Was working on the diplomatic codes and ciphers of 26 countries, tackling over 150 diplomatic cryptosystems. The US Cipher Bureau was established in 1919 and achieved some success at the Washington Naval Conference in 1921, through cryptanalysis by Herbert Yardley . Secretary of War Henry L. Stimson closed the US Cipher Bureau in 1929 with the words "Gentlemen do not read each other's mail." The use of SIGINT had even greater implications during World War II . The combined effort of intercepts and cryptanalysis for
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