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Twydall Profile
The Twydall Profile was a style of fortification used in British and Imperial polygonal forts at the end of the 19th century. The sloping earthworks employed in the Twydall Profile were intended to be quick and inexpensive to construct and to be effective in the face of the more powerful artillery and high explosive ammunition being introduced at that time. The name comes from the village of Twydall in Kent, where the first forts of this type were built. Origins The design of the Twydall Profile emerged following the Siege of Plevna during the Russo-Turkish War of 1877 to 1878. There, the hastily constructed Turkish fieldworks had successfully withstood repeated Russian assaults between July and September 1877; the Russians finally took the town after defeating an attempted Turkish breakout in December. The reason for the effectiveness of the Turkish defences was attributed to two factors; firstly, the force of the Russian shells had been absorbed by the Turkish earthworks and sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twydall Profile
The Twydall Profile was a style of fortification used in British and Imperial polygonal forts at the end of the 19th century. The sloping earthworks employed in the Twydall Profile were intended to be quick and inexpensive to construct and to be effective in the face of the more powerful artillery and high explosive ammunition being introduced at that time. The name comes from the village of Twydall in Kent, where the first forts of this type were built. Origins The design of the Twydall Profile emerged following the Siege of Plevna during the Russo-Turkish War of 1877 to 1878. There, the hastily constructed Turkish fieldworks had successfully withstood repeated Russian assaults between July and September 1877; the Russians finally took the town after defeating an attempted Turkish breakout in December. The reason for the effectiveness of the Turkish defences was attributed to two factors; firstly, the force of the Russian shells had been absorbed by the Turkish earthworks and sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Navy Dockyard
Royal Navy Dockyards (more usually termed Royal Dockyards) were state-owned harbour facilities where ships of the Royal Navy were built, based, repaired and refitted. Until the mid-19th century the Royal Dockyards were the largest industrial complexes in Britain. From the reign of Henry VII up until the 1990s, the Royal Navy had a policy of establishing and maintaining its own dockyard facilities; (although at the same time, as continues to be the case, it made extensive use of private shipyards, both at home and abroad). Portsmouth was the first Royal Dockyard, dating from the late 15th century; it was followed by Deptford, Woolwich, Chatham and others. By the 18th century, Britain had a string of these state-owned naval dockyards, located not just around the country but across the world; each was sited close to a safe harbour or anchorage used by the fleet. Royal Naval Dockyards were the core naval and military facilities of the four Imperial fortresses - colonies which ena ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andrew Clarke (British Army Officer, Born 1824)
Lieutenant General Sir Andrew Clarke, (27 July 1824 – 29 March 1902) was a British soldier and governor, as well as a surveyor and politician in Australia.Betty Malone, Clarke, Sir Andrew (1824–1902), ''Australian Dictionary of Biography'', Vol.3, MUP, 1969, pp 409–411. Background and education Born in Southsea, Hampshire, Clarke was the eldest of the four sons of Lieutenant-Colonel Sir Andrew Clarke, the Governor of Western Australia (1793–1847). Clarke's early years were spent in India with his parents. He was later brought up by his paternal grandfather and two uncles, one of whom was the father of Marcus Clarke, at the family home of Belmont, near Lifford, Ireland. He was educated at The King's School, Canterbury, and at Portora Royal School at Enniskillen, Ireland. At 16 he entered the Royal Military Academy, Woolwich, where one of his teachers was Michael Faraday. Career Graduating in 1844, Clarke was commissioned a 2nd Lieutenant in the Royal Engineers and aft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grange Redoubt
Grange Redoubt, also known as one of the two Twydall Redoubts, was constructed in 1885. It was not included in the original list of defensive structures proposed by the Royal Commission on the Defence of the United Kingdom in 1860, but was conceived later and implemented as an experimental redoubt as opposed to a more substantial fort. Grange and Woodlands Redoubts defended Chatham Dockyard Chatham Dockyard was a Royal Navy Dockyard located on the River Medway in Kent. Established in Chatham in the mid-16th century, the dockyard subsequently expanded into neighbouring Gillingham (at its most extensive, in the early 20th century, ... against landward attack from the east. References Redoubts Forts in Medway {{Kent-struct-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woodlands Redoubt
Woodlands Redoubt, also known as one of the two Twydall Redoubts, was constructed in 1888. It was not included in the original list of defensive structures proposed by the Royal Commission on the Defence of the United Kingdom in 1860, but was conceived later and implemented as an experimental redoubt as opposed to a more substantial fort. In conjunction with Grange Redoubt its function was to defend Chatham Dockyard Chatham Dockyard was a Royal Navy Dockyard located on the River Medway in Kent. Established in Chatham in the mid-16th century, the dockyard subsequently expanded into neighbouring Gillingham (at its most extensive, in the early 20th century, ... against landward attack from the east. References Forts in Medway Redoubts {{Kent-struct-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caponier
A caponier is a type of defensive structure in a fortification. Fire from this point could cover the ditch beyond the curtain wall to deter any attempt to storm the wall. The word originates from the French ', meaning "chicken coop" (a ''capon'' is a castrated male chicken). In some types of bastioned fortifications, the caponier served as a means of access to the outworks, protecting troops from direct fire; they were often roofless. Although they could be used for firing along the ditch, the flanks of the bastions were the main defence of the ditch by fire. In later polygonal forts, caponiers were often roofed, and were not intended as a type of ''covered way'', but as the main way of keeping the ditch clear of the enemy. History Originally the term referred to a covered passageway that traversed the ditch outside the curtain of a fortress. Fire from this point could cover the ditch beyond the curtain wall to deter any attempt to storm the wall. Thus the passageway was equip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Counterscarp
A scarp and a counterscarp are the inner and outer sides, respectively, of a ditch or moat used in fortifications. Attackers (if they have not bridged the ditch) must descend the counterscarp and ascend the scarp. In permanent fortifications the scarp and counterscarp may be encased in stone. In less permanent fortifications, the counterscarp may be lined with paling fence set at an angle so as to give no cover to the attackers but to make advancing and retreating more difficult. If an attacker succeeds in breaching a wall a coupure can be dug on the inside of the wall to hinder the forlorn hope, in which case the side of the ditch farthest from the breached wall and closest to the centre of the fortification is also called the counterscarp. Counterscarp gallery These are tunnels or "galleries" that have been built behind the counterscarp wall inside the moat or ditch. Each gallery is pierced with loopholes for musketry, so that attacking forces that enter the moat can be dire ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Revetment
A revetment in stream restoration, river engineering or coastal engineering is a facing of impact-resistant material (such as stone, concrete, sandbags, or wooden piles) applied to a bank or wall in order to absorb the energy of incoming water Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a ... and protect it from erosion. River or coastal revetments are usually built to preserve the existing uses of the shoreline and to protect the slope. In military engineering it is a sloped structure formed to secure an area from artillery, bombing, or stored explosives. Freshwater revetments Many revetments are used to line the banks of freshwater rivers, lakes, and man-made reservoirs, especially to prevent damage during periods of floods or heavy seasonal rains (see riprap). Many mater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Field Artillery
Field artillery is a category of mobile artillery used to support armies in the field. These weapons are specialized for mobility, tactical proficiency, short range, long range, and extremely long range target engagement. Until the early 20th century, field artillery were also known as foot artillery, for while the guns were pulled by beasts of burden (often horses), the gun crews would usually march on foot, thus providing fire support mainly to the infantry. This was in contrast to horse artillery, whose emphasis on speed while supporting cavalry units necessitated lighter guns and crews riding on horseback. Whereas horse artillery has been superseded by self-propelled artillery, field artillery has survived to this day both in name and mission, albeit with motor vehicles towing the guns (this towed artillery arrangement is often called mobile artillery), carrying the crews and transporting the ammunition. Modern artillery has also advanced to rapidly deployable wheeled a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Redoubt
A redoubt (historically redout) is a fort or fort system usually consisting of an enclosed defensive emplacement outside a larger fort, usually relying on earthworks, although some are constructed of stone or brick. It is meant to protect soldiers outside the main defensive line and can be a permanent structure or a hastily constructed temporary fortification. The word means "a place of retreat". Redoubts were a component of the military strategies of most European empires during the colonial era, especially in the outer works of Vauban-style fortresses made popular during the 17th century, although the concept of redoubts has existed since medieval times. A redoubt differs from a redan in that the redan is open in the rear, whereas the redoubt was considered an enclosed work. The advent of mobile warfare in the 20th century diminished the importance of stationary defence positions and siege warfare. Historically important redoubts English Civil War During the English Civ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
George Clarke, 1st Baron Sydenham Of Combe
George Sydenham Clarke, 1st Baron Sydenham of Combe, (4 July 1848 – 7 February 1933) was a British Army officer and colonial administrator. He later wrote antisemitic and racist pamphlets for the British far right, as well as at least one novel in 1891. Biography Background and education Clarke was born in Lincolnshire, and educated at Haileybury, Wimbledon and the Royal Military Academy, Woolwich. Military career Clarke entered the Royal Engineers in 1868, served in the Egyptian Expedition and as Assistant Political officer during the following Sudan expedition. From 1885 until 1892 Clarke was secretary to the Colonial Defence Committee, for which he was knighted as a Knight Commander of the Order of St Michael and St George (KCMG) in 1893. He was also secretary to the Royal Commission on Navy and Army Administration in 1888, a commission which did much to improve cooperation between the two services. In the late 1890s he was Superintendent of the Royal Carriage Departme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lieutenant-Colonel
Lieutenant colonel ( , ) is a rank of commissioned officers in the armies, most marine forces and some air forces of the world, above a major and below a colonel. Several police forces in the United States use the rank of lieutenant colonel. The rank of lieutenant colonel is often shortened to simply "colonel" in conversation and in unofficial correspondence. Sometimes, the term 'half-colonel' is used in casual conversation in the British Army. In the United States Air Force, the term 'light bird' or 'light bird colonel' (as opposed to a 'full bird colonel') is an acceptable casual reference to the rank but is never used directly towards the rank holder. A lieutenant colonel is typically in charge of a battalion or regiment in the army. The following articles deal with the rank of lieutenant colonel: * Lieutenant-colonel (Canada) * Lieutenant colonel (Eastern Europe) * Lieutenant colonel (Turkey) * Lieutenant colonel (Sri Lanka) * Lieutenant colonel (United Kingdom) * Lie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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