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German Cruiser Köln
was a light cruiser, the third member of the that was operated between 1929 and March 1945, including service in World War II. She was operated by two German navies, the and the . She had two sister ships, and . was built by the in Wilhelmshaven; she was laid down in August 1926, launched in May 1928, and commissioned into the on 15 January 1930. She was armed with a main battery of nine 15 cm SK C/25 (5.9-inch) guns in three triple turrets and had a top speed of . Like her sister ships, served as a training ship for naval cadets in the 1930s, and joined the non-intervention patrols during the Spanish Civil War during the latter part of the decade. After the outbreak of World War II in September 1939, she conducted several operations in the North Sea, but did not encounter any British warships. She participated in the attack on Bergen during Operation Weserübung in April 1940, and she was the only member of her class to survive the operation. In 1942, she was modifie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nazi Germany
Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalitarianism, totalitarian dictatorship. The Third Reich, meaning "Third Realm" or "Third Empire", referred to the Nazi claim that Nazi Germany was the successor to the earlier Holy Roman Empire (800–1806) and German Empire (1871–1918). The Third Reich, which the Nazis referred to as the Thousand-Year Reich, ended in May 1945, after 12 years, when the Allies of World War II, Allies defeated Germany and entered the capital, Berlin, End of World War II in Europe, ending World War II in Europe. After Hitler was appointed Chancellor of Germany in 1933, the Nazi Party began to eliminate political opposition and consolidate power. A 1934 German referendum confirmed Hitler as sole ''Führer'' (leader). Power was centralised in Hitler's person, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reichsmarine
The () was the name of the German Navy during the Weimar Republic and first two years of Nazi Germany. It was the naval branch of the , existing from 1919 to 1935. In 1935, it became known as the ''Kriegsmarine'' (War Navy), a branch of the ''Wehrmacht''; a change implemented by Adolf Hitler. Many of the administrative and organizational tenets of the were then carried over into the organization of the ''Kriegsmarine''. ''Vorläufige Reichsmarine'' The () was formed after the end of World War I from the Imperial German Navy. The provisions of the Treaty of Versailles restricted the German Navy to 15,000 men and no submarines, while the fleet was limited to six pre-dreadnought battleships, six light cruisers, twelve destroyers, and twelve torpedo boats. Replacements for the outdated battleships were restricted to a maximum size of 10,000 tons. ''Reichsmarine'' The was considered the armed naval force of the (Ministry of the Reichswehr) which was headed by a civilian minist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States Army Air Forces
The United States Army Air Forces (USAAF or AAF) was the major land-based aerial warfare service component of the United States Army and ''de facto'' aerial warfare service branch of the United States during and immediately after World War II (1941–1947). It was created on 20 June 1941 as successor to the previous United States Army Air Corps and is the direct predecessor of the United States Air Force, today one of the six United States Armed Forces, armed forces of the United States. The AAF was a component of the United States Army, which on 2 March 1942 was divided functionally by executive order into three autonomous forces: the Army Ground Forces, the United States Army Services of Supply (which in 1943 became the Army Service Forces), and the Army Air Forces. Each of these forces had a commanding general who reported directly to the Chief of Staff of the United States Army, Army Chief of Staff. The AAF administered all parts of military aviation formerly distributed am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operation Regenbogen (Arctic)
Operation Rainbow () was a 1942 sortie into the Arctic Ocean by warships of the Nazi German (German Navy) during the Second World War. The operation culminated in the Battle of the Barents Sea. Background Following the disastrous Convoy PQ 17 and the hard-fought Convoy PQ 18 battles in the summer and autumn of 1942 and the needs of Operation Torch in the Mediterranean, Allied convoys to the Soviet Union had been temporarily suspended. In December 1942 Arctic convoys resumed with a new JW/RA convoy series. The had concentrated a large force of surface vessels and U-boats, supported by the aircraft of (Air Fleet 5) of the . German plan was based on a plan to intercept the next Allied convoy to Murmansk. A patrol line of four U-boats was established off Bear Island and a surface force consisting of the cruisers and Lützow with six destroyers was assembled at Altafjord. When a convoy was spotted, the fleet would sail as two battle groups; one to engage the expected crui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Helicopter
A helicopter is a type of rotorcraft in which Lift (force), lift and thrust are supplied by horizontally spinning Helicopter rotor, rotors. This allows the helicopter to VTOL, take off and land vertically, to hover (helicopter), hover, and to fly forward, backward and laterally. These attributes allow helicopters to be used in congested or isolated areas where fixed-wing aircraft and many forms of short take-off and landing (STOL) or short take-off and vertical landing (STOVL) aircraft cannot perform without a runway. The Focke-Wulf Fw 61 was the first successful, practical, and fully controllable helicopter in 1936, while in 1942, the Sikorsky R-4 became the first helicopter to reach full-scale mass production, production. Starting in 1939 and through 1943, Igor Sikorsky worked on the development of the Vought-Sikorsky VS-300, VS-300, which over four iterations, became the basis for modern helicopters with a single main rotor and a single tail rotor. Although most earlier ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flettner Fl 282
The Flettner Fl 282 ''Kolibri'' (Hummingbird) is a single-seat intermeshing rotor helicopter, or ''synchropter'', produced by Anton Flettner of Germany. According to Yves Le Bec, the Flettner Fl 282 was the world's first series production helicopter. Design and development The Fl 282 ''Kolibri'' was an improved version of the Flettner Fl 265 announced in July 1940, which pioneered the same intermeshing rotor configuration that the ''Kolibri'' used. It had a 7.7 litre displacement, seven-cylinder Siemens-Halske Sh 14 radial engine of mounted in the center of the fuselage, with a transmission mounted on the front of the engine from which a drive shaft ran to an upper gearbox, which then split the power to a pair of opposite-rotation drive shafts to turn the rotors. The Sh 14 engine was a venerable, tried-and-true design with low specific power output and low power/weight ratio (20.28 hp/L, 0.54 hp/lb) which could (anecdotally) run for up to 400 hours without major ser ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Operation Weserübung
Operation Weserübung ( , , 9 April – 10 June 1940) was the invasion of Denmark and Norway by Nazi Germany during World War II. It was the opening operation of the Norwegian Campaign. In the early morning of 9 April 1940 (, "Weser Day"), German forces occupied Denmark and invaded Norway, ostensibly as a preventive manoeuvre against a planned Anglo-French Military occupation, occupation of Norway known as Plan R 4, which developed as a response to a German invasion of Norwegian territory. After the rapid occupation of Denmark, in which the Danish military was ordered to stand down as Denmark's government did not declare war with Germany, German envoys informed the governments of Denmark and Norway that Germany's forces had come to protect both countries against Anglo-French attacks. Significant differences in geography, location and climate between the two nations made the actual military operations very dissimilar. The invasion fleet's nominal landing time, (Weser Time), wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bergen
Bergen (, ) is a city and municipalities of Norway, municipality in Vestland county on the Western Norway, west coast of Norway. Bergen is the list of towns and cities in Norway, second-largest city in Norway after the capital Oslo. By May 2025 the population is 294 029 according to Statistics Norway. The municipality covers and is on the peninsula of Bergenshalvøyen. The city centre and northern neighbourhoods are on Byfjorden (Hordaland), Byfjorden, 'the city fjord'. The city is surrounded by mountains, causing Bergen to be called the "city of Seven Mountains, Bergen, seven mountains". Many of the extra-municipal suburbs are on islands. Bergen is the administrative centre of Vestland county. The city consists of eight boroughs: Arna, Bergen, Arna, Bergenhus, Fana, Bergen, Fana, Fyllingsdalen, Laksevåg, Ytrebygda, Årstad, Bergen, Årstad, and Åsane. Trading in Bergen may have started as early as the 1020s. According to tradition, the city was founded in 1070 by King Ol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Sea
The North Sea lies between Great Britain, Denmark, Norway, Germany, the Netherlands, Belgium, and France. A sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian Sea in the north. It is more than long and wide, covering . It hosts key north European shipping lanes and is a major fishery. The coast is a popular destination for recreation and tourism in bordering countries, and a rich source of energy resources, including wind energy, wind and wave power. The North Sea has featured prominently in geopolitical and military affairs, particularly in Northern Europe, from the Middle Ages to the modern era. It was also important globally through the power northern Europeans projected worldwide during much of the Middle Ages and into the modern era. The North Sea was the centre of the Viking Age, Vikings' rise. The Hanseatic League, the Dutch Golden Age, Dutch Republic, and Kingdom of Great Britain, Brita ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spanish Civil War
The Spanish Civil War () was a military conflict fought from 1936 to 1939 between the Republican faction (Spanish Civil War), Republicans and the Nationalist faction (Spanish Civil War), Nationalists. Republicans were loyal to the Left-wing politics, left-leaning Popular Front (Spain), Popular Front government of the Second Spanish Republic. The opposing Nationalists were an alliance of Falangism, Falangists, monarchists, conservatives, and Traditionalism (Spain), traditionalists led by a National Defense Junta, military junta among whom General Francisco Franco quickly achieved a preponderant role. Due to the international Interwar period#Great Depression, political climate at the time, the war was variously viewed as class struggle, a War of religion, religious struggle, or a struggle between dictatorship and Republicanism, republican democracy, between revolution and counterrevolution, or between fascism and communism. The Nationalists won the war, which ended in early 1939, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Non-intervention In The Spanish Civil War
During the Spanish Civil War, most European countries followed a policy of non-intervention to avoid potential escalation or expansion of the war to other states. This policy led to the signing of the Non-Intervention Agreement in August 1936 and the setting up of the Non-Intervention Committee, which first met in September. Primarily arranged by the French Third Republic, French and United Kingdom, British governments, the committee included the Soviet Union, Fascist Italy (1922–1943), Fascist Italy, and Nazi Germany. Ultimately, the committee had the support of 27 states. A plan to control materials coming into Spain was put forward in early 1937, effectively subjecting the Second Spanish Republic, Spanish Republic to severe international isolation and a ''de facto'' trade embargo, economic embargo. The plan was mocked by German and Italian observers as amounting to immediate and decisive support for the Nationalist faction (Spanish Civil War), Spanish Nationalist faction. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Naming And Launching
Ceremonial ship launching involves the performing of ceremonies associated with the process of transferring a vessel to the water. It is a nautical tradition in many cultures, dating back millennia, to accompany the physical process with ceremonies which have been observed as public celebration and a solemn blessing, usually but not always, in association with the launch itself. Ship launching imposes stresses on the ship not met during normal operation and in addition to the size and weight of the vessel represents a considerable engineering challenge as well as a public spectacle. The process also involves many traditions intended to invite good luck, such as christening by breaking a sacrificial bottle of champagne over the bow as the ship is named aloud and launched. Methods There are three principal methods of conveying a new ship from building site to water, only two of which are called "launching". The oldest, most familiar, and most widely used is the end-on la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
