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Fort Du Mont Verdun
Fort Mont Verdun is the biggest highlight of the second belt of Forts around Lyon and is the only one considered to be a mountain fort. It rests at 630 meters altitude, dominating Lyon, Limonest, the lower Azergues valley and the Saône valley. It was covered by a low battery and four other associated batteries: Mont Thou, Les Carrières, Narcel and La Freta. It is now occupied by the Airbase 942 Lyon-Mont Verdun. This belt of forts included the forts of Bron, Vancia, Fort de Feyzin and Fort du Mont Verdun itself. History Work began in 1874 and the barracks were strengthened in 1886 by special concrete. A pentagon, the fort is surrounded by covered trench caponnières. The entrance to the fort is via a Pont Dormant extended by an overhead crane. A thick pile of earth at its center hides the barracks of two floors which can accommodate 500 men. This slope surface also housed 14 artillery platforms. Two powder stores, capable of holding 76 and 65 tonnes, prov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radom
Radom is a city in east-central Poland, located approximately south of the capital, Warsaw. It is situated on the Mleczna River in the Masovian Voivodeship (since 1999), having previously been the seat of a separate Radom Voivodeship (1975–1998). Radom is the fourteenth-largest city in Poland and the second-largest in its province with a population of 206,946 as of 2021. For centuries, Radom was part of the Sandomierz Province of the Kingdom of Poland and the later Polish–Lithuanian Commonwealth. Despite being part of the Masovian Voivodeship, the city historically belongs to Lesser Poland. It was a significant center of administration, having served as seat of the Crown Council which ratified the Pact of Vilnius and Radom between Lithuania and Poland in 1401. The Nihil novi and Łaski's Statute were adopted by the Sejm at Radom's Royal Castle in 1505. In 1976, it was a center of the June 1976 protests. The city is home to the biennial Radom Air Show, the largest air sho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telegraphy
Telegraphy is the long-distance transmission of messages where the sender uses symbolic codes, known to the recipient, rather than a physical exchange of an object bearing the message. Thus flag semaphore is a method of telegraphy, whereas pigeon post is not. Ancient signalling systems, although sometimes quite extensive and sophisticated as in China, were generally not capable of transmitting arbitrary text messages. Possible messages were fixed and predetermined and such systems are thus not true telegraphs. The earliest true telegraph put into widespread use was the optical telegraph of Claude Chappe, invented in the late 18th century. The system was used extensively in France, and European nations occupied by France, during the Napoleonic era. The electric telegraph started to replace the optical telegraph in the mid-19th century. It was first taken up in Britain in the form of the Cooke and Wheatstone telegraph, initially used mostly as an aid to railway signalling. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Séré De Rivières System
The system was named after Raymond Adolphe Séré de Rivières, its originator. The system was an ensemble of fortifications built from 1874 along the frontiers and coasts of France. The fortresses were obsolescent by 1914 but were used during the First World War. Background Following the Franco-Prussian War of 1870–1871, France found itself seriously weakened and isolated from the rest of Europe, menaced by Germany and stung by the loss of Alsace-Lorraine. At the same time as the departure of the last German troops, France created the Defence Committee (), which was active between 1872 and 1888, whose mission was to reorganize the defence of the French frontiers and coasts. It was necessary to compensate for the lost territories of the north-east; to modernise old fortifications, which had been shown to be wanting in the last war and to create new fortifications proof against modern weaponry using new and more powerful explosives. The committee was created by a preside ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceintures De Lyon
The ceintures de Lyon ('Belts of Lyon') were a series of fortifications built between 1830 and 1890 around the city of Lyon, France, to protect the city from foreign invasion. The belts comprised two defensive barriers that included forts, lunettes, ramparts, batteries, and other defensive structures. Many of these structures proved to be ineffective in war due to advancement in weapon technology and the evolution of attack strategies at the time. Some of the fortifications of the ceintures de Lyon have been destroyed, though many remain today. History After the July Revolution in 1830 and the end of the Bourbon monarchy, the government feared a new war. Austria was seen as the major threat to France at the time, and so protecting the east and south-east borders became a priority. Construction of the first belt In 1830 the maréchal de camp, Hubert Rohault de Fleury, commenced a project designed by military engineer Baron Haxo. With a budget of francs (approxim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radome
A radome (a portmanteau of radar and dome) is a structural, weatherproof enclosure that protects a radar antenna (radio), antenna. The radome is constructed of material transparent to radio waves. Radomes protect the antenna from weather and conceal antenna electronic equipment from view. They also protect nearby personnel from being accidentally struck by quickly rotating antennas. Radomes can be constructed in several shapes spherical, geodesic dome, geodesic, planar, etc. depending on the particular application, using various construction materials such as fiberglass, polytetrafluoroethylene, polytetrafluoroethylene (PTFE)-coated fabric, and others. When found on fixed-wing aircraft with forward-looking radar, as are commonly used for object or weather detection, the nose cones often additionally serve as radomes. On aircraft used for airborne early warning and control (AEW&C), a rotating radome, often called a "rotodome", is mounted on the top of the fuselage for 360-degr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Air Force
An air force – in the broadest sense – is the national military branch that primarily conducts aerial warfare. More specifically, it is the branch of a nation's armed services that is responsible for aerial warfare as distinct from an army or navy. Typically, air forces are responsible for gaining control of the air, carrying out strategic and tactical bombing missions, and providing support to land and naval forces often in the form of aerial reconnaissance and close air support. The term air force may also refer to a tactical air force or numbered air force, which is an operational formation either within a national air force or comprising several air components from allied nations. Air forces typically consist of a combination of fighters, bombers, helicopters, transport planes and other aircraft. Many air forces may command and control other air defence forces assets such as anti-aircraft artillery, surface-to-air missiles, or anti-ballistic missile warning ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ammunition Dump
An ammunition dump, ammunition supply point (ASP), ammunition handling area (AHA) or ammunition depot is a military storage facility for live ammunition and explosives. The storage of live ammunition and explosives is inherently hazardous. There is the potential for accidents in the unloading, packing, and transfer of ammunition. Great care is taken in handling these dangerous explosives so as not to harm personnel or nearby ammunition. Despite the intensive preventive measures they get, ammunition depots around the world suffer from non-combat fires and explosions. Although this is a rare occurrence, there are devastating consequences when it does happen. Usually, an ammunition depot experiencing even minor explosions in one of its sites/buildings is immediately evacuated together with surrounding civilian areas. Thus, all of the stored ammunition is left to detonate itself completely for days or weeks, with very limited attempts at firefighting from a safe distance.How one ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grenoble
lat, Gratianopolis , commune status = Prefecture and commune , image = Panorama grenoble.png , image size = , caption = From upper left: Panorama of the city, Grenoble’s cable cars, place Saint-André, jardin de ville, banks of the Isère , arrondissement = Grenoble , canton = Grenoble-1, 2, 3 and 4 , INSEE = 38185 , postal code = 38000, 38100 , mayor = Éric Piolle , term = 2020–2026 , party = EELV , image flag = Flag of Grenoble.svg , image coat of arms = Coat of Arms of Grenoble.svg , intercommunality = Grenoble-Alpes Métropole , coordinates = , elevation min m = 212 , elevation m = 398 , elevation max m = 500 , area km2 = 18.13 , population = , population date = , population footnotes = , urban pop = 451096 , urban area km2 = 358.1 , u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bastille (Grenoble)
The Bastille is the name of a fortress culminating at 476 m (ft) above sea level, located at the south end of the Chartreuse mountain range and overlooking the city of Grenoble, France. The Bastille, which also gives its name to the hill, is the main tourist site of the Grenoble area, with 600,000 visitors per year. Geography The fortress lies on the final promontory of Mount Rachais, a narrow mountain that is the most southerly of the Chartreuse range. The plateau of the fortress' main fortifications is situated 264 metres above a singularly flat valley floor which is glacial in origin. The melting of the Isère glacier approximately years ago led to the formation of a vast lake stretching from Voiron to Albertville and which remained for approximately years. The filling-in of this lake by alluvial deposits created the perfectly flat valley floors that are in evidence today. The location of the fort was chosen because it facilitated the surveillance and control of the c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gunpowder Magazine
A gunpowder magazine is a magazine (building) designed to store the explosive gunpowder in wooden barrels for safety. Gunpowder, until superseded, was a universal explosive used in the military and for civil engineering: both applications required storage magazines. Most magazines were purely functional and tended to be in remote and secure locations. They are the successor to the earlier powder towers and powder houses. In Australia Historic magazines were at the following locations, among others: *Jack's Magazine, Saltwater River, Victoria * Goat Island, Sydney *Spectacle Island (Port Jackson) *North Arm Powder Magazine *Dry Creek explosives depot In Canada There are magazines at: *Citadel Hill (Fort George) *Citadel of Quebec, Quebec City, Quebec *Parc de l'Esplanade, Quebec City, QuebecCole Island Esquimalt, British Columbia *Fort Lennox, Île-aux-Noix, Quebec *Fort William Historical Park, Thunder Bay, Ontario *Fort York, Toronto In Ireland Ballincollig, County Cork ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lyon
Lyon,, ; Occitan: ''Lion'', hist. ''Lionés'' also spelled in English as Lyons, is the third-largest city and second-largest metropolitan area of France. It is located at the confluence of the rivers Rhône and Saône, to the northwest of the French Alps, southeast of Paris, north of Marseille, southwest of Geneva, northeast of Saint-Étienne. The City of Lyon proper had a population of 522,969 in 2019 within its small municipal territory of , but together with its suburbs and exurbs the Lyon metropolitan area had a population of 2,280,845 that same year, the second most populated in France. Lyon and 58 suburban municipalities have formed since 2015 the Metropolis of Lyon, a directly elected metropolitan authority now in charge of most urban issues, with a population of 1,411,571 in 2019. Lyon is the prefecture of the Auvergne-Rhône-Alpes region and seat of the Departmental Council of Rhône (whose jurisdiction, however, no longer extends over the Metropolis of Lyo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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