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Coehorn
A Coehorn (also spelled ''cohorn'') is a lightweight mortar originally designed by Dutch military engineer Menno van Coehoorn. Concept and design Van Coehoorn came to prominence during the 1688–1697 Nine Years War, whose tactics have been summarised by historian John Childs: "The majority of infantrymen never fired their muskets in anger; ... armies were consciously geared towards the dominant forms of warfare: manoeuvre and the siege." This emphasis on siege warfare led to many developments in the use and design of artillery. Fortifications were vulnerable to vertical trajectory or plunging fire, and the concept of mortars was well understood, but large-scale mortars were initially used only to provide close support for infantry assaults on fortified positions. Van Coehoorn demonstrated them in May 1701 to William III of England, and they were first used in action at the siege of Kaiserswerth in 1702. The original Coehorn was light enough to be moved by as few as two ...
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Siege Artillery In The American Civil War
Siege artillery is heavy artillery primarily used in military attacks on fortified positions. At the time of the American Civil War, the U.S. Army classified its artillery into three types, depending on the gun's weight and intended use. Field Artillery in the American Civil War, ''Field artillery'' were light pieces that often traveled with the armies. ''Siege and garrison artillery'' were heavy pieces that could be used either in attacking or defending fortified places. ''Seacoast artillery'' were the heaviest pieces and were intended to be used in permanent fortifications along the seaboard. They were primarily designed to fire on attacking warships . The distinctions are somewhat arbitrary, as field, siege and garrison, and seacoast artillery were all used in various attacks and defenses of fortifications. This article will focus on the use of heavy artillery in the attack of fortified places during the American Civil War. The weight and size of siege artillery prevented ...
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Siege
A siege () . is a military blockade of a city, or fortress, with the intent of conquering by attrition, or by well-prepared assault. Siege warfare (also called siegecrafts or poliorcetics) is a form of constant, low-intensity conflict characterized by one party holding a strong, static, defensive position. Consequently, an opportunity for negotiation between combatants is common, as proximity and fluctuating advantage can encourage diplomacy. A siege occurs when an attacker encounters a city or fortress that cannot be easily taken by a quick assault, and which refuses to surrender. Sieges involve surrounding the target to block provision of supplies and reinforcement or escape of troops (a tactic known as "investment"). This is typically coupled with attempts to reduce the fortifications by means of siege engines, artillery bombardment, mining (also known as sapping), or the use of deception or treachery to bypass defenses. Failing a military outcome, sieges can often be ...
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Mortars
Mortar may refer to: * Mortar (weapon), an indirect-fire infantry weapon * Mortar (masonry), a material used to fill the gaps between blocks and bind them together * Mortar and pestle, a tool pair used to crush or grind * Mortar, Bihar, a village in India * The Manby mortar, an invention for rescuing shipwreck survivors See also

* Mortar methods, discretization methods for partial differential equations * Mortarboard, a type of headwear worn as part of academic dress * Mortar Board, a national honor society for college seniors * * {{disambiguation ...
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Vue Pa Chay's Revolt
Vue Pa Chay's revolt, also called War of the Insane or the Madman's War (''Guerre du Fou'') by French sources, was a Hmong revolt against taxation in the French colonial administration in Indochina lasting from 1918 to 1921. Vue Pa Chay, the leader of the revolt, regularly climbed trees to receive military orders from heaven. The French granted the Hmong a special status in 1920, effectively ending the conflict.Fadiman, Anne. ''The Spirit Catches You and You Fall Down''. The Noonday Press. 1997. 17. The stimulus for the rebellion was heavy taxation by the French and abuse of power by the ethnic Lao and Tai tax collectors. The Hmong people divided themselves into pro-French and anti-French factions. The rebellion, called "Rog Paj Cai" by the Hmong nationalists and "Rog Phim Npab" by Hmong who sided with the French, was a self-initiated and self-sustaining movement. All guns were Hmong-designed and manufactured flintlocks, which were slightly different from the traditional wes ...
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Hmong People
The Hmong people ( RPA: , CHV: ''Hmôngz'', Nyiakeng Puachue: , Pahawh Hmong: , , zh, c=苗族蒙人) are an indigenous group in East Asia and Southeast Asia. In China, the Hmong people are classified as a sub-group of the Miao people. The modern Hmong reside mainly in Southwestern China and Mainland Southeast Asian countries such as Vietnam, Laos, Thailand, and Myanmar. There are also diaspora communities in the United States, Australia, France, and South America. Etymology The term ''Hmong'' is the English pronunciation of the Hmong's native name. It is a singular and plural noun (e.g., Japanese, French, etc.). Very little is known about the native Hmong name as it is not mentioned in Chinese historical records, since the Han identified the Hmong as Miao. The meaning of it is debatable and no one is sure of its origin, although it can be traced back to several provinces in China. However, Hmong Americans and Hmong Laotians often associate it with "Free" and/or "Hmoov ...
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Stokes Mortar
The Stokes mortar was a British trench mortar designed by Sir Wilfred Stokes KBE that was issued to the British and U.S. armies, as well as the Portuguese Expeditionary Corps, during the latter half of the First World War. The 3-inch trench mortar is a smooth-bore, muzzle-loading weapon for high angles of fire. Although it is called a 3-inch mortar, its bore is actually 3.2 inches or 81 mm. Design The Stokes mortar was a simple weapon, consisting of a smoothbore metal tube fixed to a base plate (to absorb recoil) with a lightweight bipod mount. When a mortar bomb was dropped into the tube, an impact sensitive primer in the base of the bomb would make contact with a firing pin at the base of the tube, and ignite the propellant charge in the base, launching the bomb towards the target. The warhead itself was detonated by an impact fuse on reaching the target. The barrel is a seamless drawn-steel tube necked down at the breech or base end. To the breech end is fitted a ...
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Battle Of Aubers
The Battle of Aubers (Battle of Aubers Ridge) was a British offensive on the Western Front on 9 May 1915 during the First World War. The battle was part of the British contribution to the Second Battle of Artois, a Franco-British offensive intended to exploit the German diversion of troops to the Eastern Front. The French Tenth Army was to attack the German 6th Army north of Arras and capture Vimy Ridge, preparatory to an advance on Cambrai and Douai. The British First Army, on the left (northern) flank of the Tenth Army, was to attack on the same day and widen the gap in the German defences expected to be made by the Tenth Army and to fix German troops north of La Bassée Canal. The attack was an unmitigated disaster on the part of the British. No ground was gained, no tactical advantage was gained, and they suffered more than ten times the number of casualties as the Germans. To make matters worse the battle precipitated a political crisis back home, which became the Shell ...
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Battle Of Neuve Chapelle
The Battle of Neuve Chapelle (10–13 March 1915) took place in the First World War in the Artois region of France. The attack was intended to cause a rupture in the German lines, which would then be exploited with a rush to the Aubers Ridge and possibly Lille. A French assault at Vimy Ridge on the Artois plateau was also planned to threaten the road, rail and canal junctions at La Bassée from the south as the British attacked from the north. The British attackers broke through German defences in a salient at the village of Neuve-Chapelle but the success could not be exploited. If the French Tenth Army captured Vimy Ridge and the north end of the Artois plateau, from Lens to La Bassée, as the First Army took Aubers Ridge from La Bassée to Lille, a further advance of would cut the roads and railways used by the Germans, to supply the troops in the Noyon Salient from Arras south to Rheims. The French part of the offensive was cancelled when the British were unable to rel ...
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Toby Rawlinson
Colonel Sir Alfred "Toby" Rawlinson, 3rd Baronet, (17 January 1867 – 1 June 1934) was an English soldier and intelligence officer, sportsman, pioneer motorist and aviator. Early life Rawlinson was the second son of Major-General Sir Henry Creswicke Rawlinson, 1st Baronet, a soldier, diplomat and expert in Persian antiquities. His mother was Louisa Caroline Harcourt, a daughter of Henry Seymour one of the Tory MPs for Taunton. Two of his uncles, Henry Danby Seymour and Alfred Seymour, were also MPs. His older brother became General Henry Rawlinson, 1st Baron Rawlinson, who masterminded the Battle of Amiens and the Hundred Days Offensive that brought the fighting of the First World War to a close. Rawlinson, known to family and friends as "Toby", was born on 17 January 1867 at the family home in Charles Street, Mayfair, in the West End of London. He was educated at Eton College and the Royal Military College, Sandhurst, after which he was commissioned as a 2nd lieute ...
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Minenwerfer
''Minenwerfer'' ("mine launcher" or "mine thrower") is the German name for a class of short range mine shell launching mortars used extensively during the First World War by the Imperial German Army. The weapons were intended to be used by engineers to clear obstacles, including bunkers and barbed wire, that longer range artillery would not be able to target accurately. The name of "minenwerfer" lives on in the German version of Clash Royale, where it refers to a building that deals damage by launching projectiles. Background The Germans studied the Siege of Port Arthur, where heavy artillery had been unable to destroy defensive structures like barbed wire and bunkers. The German Military ''Ingenieurkomitee'' ("Engineer committee") began working with Rheinmetall to study the problem in 1907. The solution they developed was a short-barrelled rifled muzzle-loading mortar for mine shell ammunition, built in three sizes. In 1910, the largest of these was introduced as the '' 25 ...
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