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Signal Intelligence
Signals intelligence (SIGINT) is 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). Signals intelligence is a subset of intelligence collection management. As classified and sensitive information is usually encrypted, signals intelligence in turn involves the use of cryptanalysis to decipher the messages. Traffic analysis—the study of who is signaling whom and in what quantity—is also used to integrate information again. History Origins 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 the late 1890s, and the British Army used some limited wireless signalling. The Boers captured some wireless sets and used them to make vital transmissi ... [...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] |
Henry Oliver
Admiral of the Fleet Sir Henry Francis Oliver, (22 January 1865 – 15 October 1965) was a Royal Navy officer. After serving in the Second Boer War as a navigating officer in a cruiser on the Cape of Good Hope and West Coast of Africa Station, he became the first commanding officer of the new navigation school in the early years of the 20th century. He went to be commanding officer first of the armoured cruiser and then of the new battleship before becoming Director of the Intelligence Division at the Admiralty. During the First World War, Oliver was sent to Antwerp where, with Belgian support, he blew up the engine rooms of 38 stranded German merchant vessels. He became Naval Secretary to Winston Churchill, First Lord of the Admiralty, and then chief of the Admiralty War Staff before serving as Deputy Chief of the Naval Staff. In that capacity, he was closely involved in directing the Allied forces at the Battle of Jutland. He served as commander of the 1st Battlecruis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Georges Painvin
Georges Jean Painvin (; 28 January 1886 – 21 January 1980) was a French geologist and industrialist, best known as the cryptanalyst who broke the ADFGX/ADFGVX cipher used by the Germans during the First World War. Early life Painvin was born into a family of graduates from the École polytechnique and mathematicians from Nantes. In addition to his remarkable scientific education, the young Painvin was also a keen cello player, where in 1902 he was awarded First prize for cello at the Nantes Conservatory of Music. In 1905, Painvin passed his matriculation exam into the École polytechnique. In his second year, he opted for admission to the Corps des mines where he would make his profession. However, French military service would briefly take him away from this fulfilment. On 7 September 1907, Painvin was appointed reserve second lieutenant and assigned to the 33rd Artillery Regiment to attend his third year on obligatory military service. In 1909 and again in 1911, he attended ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ADFGVX Cipher
In cryptography, the ADFGVX cipher was a manually applied field cipher used by the Imperial German Army during World War I. It was used to transmit messages secretly using wireless telegraphy. ADFGVX was in fact an extension of an earlier cipher called ADFGX which was first used on 1 March 1918 on the German Western Front. ADFGVX was applied from 1 June 1918 on both the Western Front and Eastern Front. Invented by the Germans signal corps officers Lieutenant (1891–1977) and introduced in March 1918 with the designation "Secret Cipher of the Radio Operators 1918" (''Geheimschrift der Funker 1918'', in short ''GedeFu 18''), the cipher was a fractionating transposition cipher which combined a modified Polybius square with a single columnar transposition. The cipher is named after the six possible letters used in the ciphertext: , , , , and . The letters were chosen deliberately because they are very different from one another in the Morse code. That reduced the possibility of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Battle Of Tannenberg
The Battle of Tannenberg, also known as the Second Battle of Tannenberg, was fought between Russia and Germany between 26 and 30 August 1914, the first month of World War I. The battle resulted in the almost complete destruction of the Russian Second Army and the suicide of its commanding general, Alexander Samsonov. A series of follow-up battles ( First Masurian Lakes) destroyed most of the First Army as well and kept the Russians off balance until the spring of 1915. The battle is particularly notable for fast rail movements by the German Eighth Army, enabling them to concentrate against each of the two Russian armies in turn, first delaying the First Army and then destroying the Second before once again turning on the First days later. It is also notable for the failure of the Russians to encode their radio messages, broadcasting their daily marching orders in the clear, which allowed the Germans to make their movements with the confidence they would not be flanked. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Von Hindenburg
Paul Ludwig Hans Anton von Beneckendorff und von Hindenburg (; abbreviated ; 2 October 1847 – 2 August 1934) was a German field marshal and statesman who led the Imperial German Army during World War I and later became President of Germany from 1925 until his death in 1934. During his presidency, he played a key role in the Nazi seizure of power in January 1933 when, under pressure from advisers, he appointed Adolf Hitler as Chancellor of Germany. Hindenburg was born to a family of minor Prussian nobility in Posen. Upon completing his education as a cadet, he enlisted in the Third Regiment of Foot Guards as a second lieutenant. He then saw combat during the Austro-Prussian and Franco-Prussian wars. In 1873, he was admitted to the prestigious '' Kriegsakademie'' in Berlin, where he studied for three years before being appointed to the Army's General Staff Corps. Later in 1885, he was promoted to the rank of major and became a member of the Great General Staff. Following a f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Erich Ludendorff
Erich Friedrich Wilhelm Ludendorff (9 April 1865 – 20 December 1937) was a German general, politician and military theorist. He achieved fame during World War I for his central role in the German victories at Liège and Tannenberg in 1914. Following his appointment as First Quartermaster-general (german: Erster Generalquartiermeister) of the Imperial Army's Great General Staff in 1916, he became the chief policymaker in a ''de facto'' military dictatorship that dominated Germany for the rest of the war. After Germany's defeat, he contributed significantly to the Nazis' rise to power. Erich Ludendorff came from a family of the minor nobility in Ludendorff, (now Kruszewnia), located in the Prussian province of Posen. After completing his education as a cadet, he received his commission as a junior officer in 1885. Later in 1893, Ludendorff was admitted to the prestigious German War Academy and was recommended by its commandant to the General Staff Corps only a year later. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Invasion Of East Prussia (1914)
The Russian invasion of East Prussia occurred during World War I, lasting from August to September 1914. As well as being the natural course for the Russian Empire to take upon the declaration of war on the German Empire, it was also an attempt to focus the Imperial German Army on the Eastern Front, as opposed to the Western Front. Despite having an overwhelming superiority over the Germans in numbers, the invading Imperial Russian Army spread its forces thin and was defeated in the battles of Tannenberg and the Masurian Lakes, resulting in a complete strategic collapse of the Russian invasion. The shock of the invasion served to assist the German war effort according to one historian, who argued that "Outrage at the violation of national territory and Tsarist atrocities strengthened German solidarity, cemented conviction in the righteousness of the national cause, and acted as a terrible and lasting warning of the penalties of defeat". German planning German strategy vi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Russian Army
The Russian Ground Forces (russian: Сухопутные войска [СВ], Sukhoputnyye voyska [SV]), also known as the Russian Army (, ), are the Army, land forces of the Russian Armed Forces. The primary responsibilities of the Russian Ground Forces are the protection of the state borders, combat on land, and the defeat of enemy troops. The President of Russia is the Supreme Commander-in-Chief of the Russian Armed Forces, Supreme Commander-in-Chief of the Armed Forces of the Russian Federation. The Commander-in-Chief of the Russian Ground Forces is the chief commanding authority of the Russian Ground Forces. He is appointed by the President of Russia. The Main Command of the Ground Forces is based in Moscow. Mission The primary responsibilities of the Russian Ground Forces are the protection of the state borders, combat on land, the security of occupied territories, and the defeat of enemy troops. The Ground Forces must be able to achieve these goals both in nuclear war a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First World War
World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, the United States, and the Ottoman Empire, with fighting occurring throughout Europe, the Middle East, Africa, the Pacific, and parts of Asia. An estimated 9 million soldiers were killed in combat, plus another 23 million wounded, while 5 million civilians died as a result of military action, hunger, and disease. Millions more died in genocides within the Ottoman Empire and in the 1918 influenza pandemic, which was exacerbated by the movement of combatants during the war. Prior to 1914, the European great powers were divided between the Triple Entente (comprising France, Russia, and Britain) and the Triple Alliance (containing Germany, Austria-Hungary, and Italy). Tensions in the Balkans came to a head on 28 June 1914, following the assassination of Archduke Franz Ferdina ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
