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Signals Intelligence In Modern History
Before the development of radar and other electronics techniques, signals intelligence (SIGINT) and communications intelligence (COMINT) were essentially synonymous. Sir Francis Walsingham ran a postal interception bureau with some cryptanalytic capability during the reign of Elizabeth I, but the technology was only slightly less advanced than men with shotguns, during World War I, who jammed pigeon post communications and intercepted the messages carried. Flag signals were sometimes intercepted, and efforts to impede them made . The middle 19th century rise of the telegraph allowed more scope for interception and spoofing of signals, as shown at Signal Corps in the American Civil War#Chancellorsville, Chancellorsville. Signals intelligence became far more central to military (and to some extent diplomatic) intelligence generally with the mechanization of armies, development of blitzkrieg tactics, use of submarine and commerce raiders warfare, and the development of practicable ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radar
Radar is a detection system that uses radio waves to determine the distance (''ranging''), angle, and radial velocity of objects relative to the site. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. A radar system consists of a transmitter producing electromagnetic waves in the radio or microwaves domain, a transmitting antenna, a receiving antenna (often the same antenna is used for transmitting and receiving) and a receiver and processor to determine properties of the objects. Radio waves (pulsed or continuous) from the transmitter reflect off the objects and return to the receiver, giving information about the objects' locations and speeds. Radar was developed secretly for military use by several countries in the period before and during World War II. A key development was the cavity magnetron in the United Kingdom, which allowed the creation of relatively small systems with sub-meter resolution. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Diana (1895) IWM Q 038649
Nine ships of the Royal Navy have borne the name HMS ''Diana'' after the figure from Roman mythology, whilst another was planned but later cancelled: * , a 32-gun fifth rate launched in 1757, commanded by Alexander Schomberg c. 1758/1759, and sold in 1793. * , a six gun schooner purchased in 1775 in North America, abandoned and burnt out later that year. *, a 38-gun fifth rate launched in 1794 and sold in 1815 to the Dutch Navy She was accidentally destroyed while in dry-dock on 16 January 1839. * , a 10-gun brig purchased in 1807 in the East Indies and condemned at Rodrigues in 1810. * , a 46-gun fifth rate launched in 1822, converted to harbour service in 1868 and broken up in 1874. * , an Indian wooden paddle vessel launched in 1836 and sold in 1846. * , an second-class cruiser, launched in 1895 and sold in 1920. * , a D-class destroyer launched in 1932, sold to the Royal Canadian Navy The Royal Canadian Navy (RCN; french: Marine royale canadienne, ''MRC'') is the Navy, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italo-Turkish War
The Italo-Turkish or Turco-Italian War ( tr, Trablusgarp Savaşı, "Tripolitanian War", it, Guerra di Libia, "War of Libya") was fought between the Kingdom of Italy and the Ottoman Empire from 29 September 1911, to 18 October 1912. As a result of this conflict, Italy captured the Ottoman Tripolitania Vilayet, of which the main sub-provinces were Fezzan, Cyrenaica, and Tripoli itself. These territories became the colonies of Italian Tripolitania and Cyrenaica, which would later merge into Italian Libya. During the conflict, Italian forces also occupied the Dodecanese islands in the Aegean Sea. Italy agreed to return the Dodecanese to the Ottoman Empire in the Treaty of Ouchy in 1912. However, the vagueness of the text, combined with subsequent adverse events unfavourable to the Ottoman Empire (the outbreak of the Balkan Wars and World War I), allowed a provisional Italian administration of the islands, and Turkey eventually renounced all claims on these islands in Article ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evidenzbureau
The k.u.k. Evidenzbureau (modernized spelling ''Evidenzbüro'') was the directorate of military intelligence of the Austro-Hungarian Empire, headquartered in Vienna, Austria. Foundation Founded in 1850 as the first permanent military intelligence service in the world, the Evidenzbureau became active in the 1859 Austro-Sardinian War and the 1866 Austro-Prussian War, albeit with little success. The Evidenzbureau initially reported to the Austro-Hungarian Foreign Ministry, but was reassigned to the General Staff at the outbreak of World War I. It existed until the end of the monarchy in 1918. The ''Kundschaftsbüro'', tasked with monitoring foreign states, was subordinate to the Evidenzbureau. Functions Towards the end of the 19th century, tensions among the major European powers were rising, leading to increased activities of intelligence services. Mirroring political interests, attention of Austro-Hungarian services was primarily directed east- and southward (Russia an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austro-Hungarian Empire
Austria-Hungary, often referred to as the Austro-Hungarian Empire,, the Dual Monarchy, or Austria, was a constitutional monarchy and great power in Central Europe between 1867 and 1918. It was formed with the Austro-Hungarian Compromise of 1867 in the aftermath of the Austro-Prussian War and was dissolved shortly after its defeat in the First World War. Austria-Hungary was ruled by the House of Habsburg and constituted the last phase in the constitutional evolution of the Habsburg monarchy. It was a multinational state and one of Europe's major powers at the time. Austria-Hungary was geographically the second-largest country in Europe after the Russian Empire, at and the third-most populous (after Russia and the German Empire). The Empire built up the fourth-largest machine building industry in the world, after the United States, Germany and the United Kingdom. Austria-Hungary also became the world's third-largest manufacturer and exporter of electric home appliances, el ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suez Canal
The Suez Canal ( arz, قَنَاةُ ٱلسُّوَيْسِ, ') is an artificial sea-level waterway in Egypt, connecting the Mediterranean Sea to the Red Sea through the Isthmus of Suez and dividing Africa and Asia. The long canal is a popular trade route between Europe and Asia. In 1858, Ferdinand de Lesseps formed the Suez Canal Company for the express purpose of building the canal. Construction of the canal lasted from 1859 to 1869. The canal officially opened on 17 November 1869. It offers vessels a direct route between the North Atlantic and northern Indian oceans via the Mediterranean Sea and the Red Sea, avoiding the South Atlantic and southern Indian oceans and reducing the journey distance from the Arabian Sea to London by approximately , or 10 days at to 8 days at . The canal extends from the northern terminus of Port Said to the southern terminus of Port Tewfik at the city of Suez. In 2021, more than 20,600 vessels traversed the canal (an average of 56 per day). T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMS Diana (1895)
HMS ''Diana'' was an protected cruiser built for the Royal Navy in the mid-1890s. Service history She was commissioned at Chatham on 16 February 1900 by Captain Henry Baynes, to take out reliefs for HMS ''Ringarooma'', HMS ''Boomerang'' and HMS ''Torch'' serving on the Australia Station, and left Plymouth two weeks later on 27 February 1900. Stopping in Gibraltar, Malta and Aden on her way out, she arrived in Australia in April, when Baynes took command of HMS ''Mildura'', stationed there, and Captain Henry Leah of the latter ship took command of ''Diana'' for the return journey. The following year, she was commissioned with the complement of 450 officers and men at Chatham on 15 January 1901 to join the Mediterranean Fleet under the command of Captain Arthur Murray Farquhar. In March 1901 she was one of two cruisers to escort HMS Ophir, commissioned as royal yacht for the world tour of the Duke and Duchess of Cornwall and York (later King George and Queen Mary), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russo-Japanese War
The Russo-Japanese War ( ja, 日露戦争, Nichiro sensō, Japanese-Russian War; russian: Ру́сско-япóнская войнá, Rússko-yapónskaya voyná) was fought between the Empire of Japan and the Russian Empire during 1904 and 1905 over rival imperial ambitions in Manchuria and the Korean Empire. The major theatres of military operations were located in Liaodong Peninsula and Mukden in Southern Manchuria, and the Yellow Sea and the Sea of Japan. Russia sought a warm-water port on the Pacific Ocean both for its navy and for maritime trade. Vladivostok remained ice-free and operational only during the summer; Port Arthur, a naval base in Liaodong Province leased to Russia by the Qing dynasty of China from 1897, was operational year round. Russia had pursued an expansionist policy east of the Urals, in Siberia and the Far East, since the reign of Ivan the Terrible in the 16th century. Since the end of the First Sino-Japanese War in 1895, Japan had feared Russian en ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Stepanovich Popov
Alexander Stepanovich Popov (sometimes spelled Popoff; russian: Алекса́ндр Степа́нович Попо́в; – ) was a Russian physicist, who was one of the first persons to invent a radio receiving device. declassified 8 January 2008 Popov's work as a teacher at a Russian naval school led him to explore high frequency electrical phenomena. On 7 May 1895, he presented a paper on a wireless lightning detector he had built that worked via using a coherer to detect radio noise from lightning strikes. This day is celebrated in the Russian Federation as Radio Day. In a 24 March 1896 demonstration, he transmitted radio signals 250 meters between different campus buildings in St. Petersburg. His work was based on that of another physicist – Oliver Lodge, and contemporaneous with the work of Guglielmo Marconi. Early life Born in the town of Krasnoturinsk, Sverdlovsk Oblast in the Urals as the son of a priest, he became interested in natural sciences when he was a ch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Russian Navy
The Imperial Russian Navy () operated as the navy of the Russian Tsardom and later the Russian Empire from 1696 to 1917. Formally established in 1696, it lasted until dissolved in the wake of the February Revolution of 1917. It developed from a smaller force that had existed prior to Tsar Peter the Great's founding of the modern Russian navy during the Second Azov campaign in 1696. It expanded in the second half of the 18th century and reached its peak strength by the early part of the 19th century, behind only the British and French fleets in terms of size. The Imperial Navy drew its officers from the aristocracy of the Empire, who belonged to the state Russian Orthodox Church. Young aristocrats began to be trained for leadership at a national naval school. From 1818 on, only officers of the Imperial Russian Navy were appointed to the position of Chief Manager of the Russian-American Company, based in Russian America (present-day Alaska) for colonization and fur-trade developme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boers
Boers ( ; af, Boere ()) are the descendants of the Dutch-speaking Free Burghers of the eastern Cape frontier in Southern Africa during the 17th, 18th, and 19th centuries. From 1652 to 1795, the Dutch East India Company controlled this area, but the United Kingdom incorporated it into the British Empire in 1806. The name of the group is derived from "boer", which means "farmer" in Dutch and Afrikaans. In addition, the term also applied to those who left the Cape Colony during the 19th century to colonise in the Orange Free State, Transvaal (together known as the Boer Republics), and to a lesser extent Natal. They emigrated from the Cape to live beyond the reach of the British colonial administration, with their reasons for doing so primarily being the new Anglophone common law system being introduced into the Cape and the British abolition of slavery in 1833. The term ''Afrikaners'' or ''Afrikaans people'' is generally used in modern-day South Africa for the white Afri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Army
The British Army is the principal land warfare force of the United Kingdom, a part of the British Armed Forces along with the Royal Navy and the Royal Air Force. , the British Army comprises 79,380 regular full-time personnel, 4,090 Gurkhas, and 28,330 volunteer reserve personnel. The modern British Army traces back to 1707, with antecedents in the English Army and Scots Army that were created during the Restoration in 1660. The term ''British Army'' was adopted in 1707 after the Acts of Union between England and Scotland. Members of the British Army swear allegiance to the monarch as their commander-in-chief, but the Bill of Rights of 1689 and Claim of Right Act 1689 require parliamentary consent for the Crown to maintain a peacetime standing army. Therefore, Parliament approves the army by passing an Armed Forces Act at least once every five years. The army is administered by the Ministry of Defence and commanded by the Chief of the General Staff. The Brit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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