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QF 3-inch 20 Cwt
The QF 3 inch 20 cwt anti-aircraft gun became the standard anti-aircraft gun used in the home defence of the United Kingdom against German airships and bombers and on the Western Front in World War I. It was also common on British warships in World War I and submarines in World War II. 20 cwt referred to the weight of the barrel and breech, to differentiate it from other 3 inch guns (1cwt = 1 hundredweight = , hence the barrel and breech together weighed ). While other AA guns also had a bore of , the term ''3 inch'' was only ever used to identify this gun in the World War I era, and hence this is what writers are usually referring to by ''3 inch AA gun''. Design and development The gun was based on a prewar Vickers naval QF gun with modifications specified by the War Office in 1914. These (Mk I) included the introduction of a vertical sliding breech-block to allow semi-automatic operation. When the gun recoiled and ran forward after firing, the motion also opened the bree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anti-aircraft Gun
Anti-aircraft warfare, counter-air or air defence forces is the battlespace response to aerial warfare, defined by NATO as "all measures designed to nullify or reduce the effectiveness of hostile air action".AAP-6 It includes surface based, subsurface ( submarine launched), and air-based weapon systems, associated sensor systems, command and control arrangements, and passive measures (e.g. barrage balloons). It may be used to protect naval, ground, and air forces in any location. However, for most countries, the main effort has tended to be homeland defence. NATO refers to airborne air defence as counter-air and naval air defence as anti-aircraft warfare. Missile defence is an extension of air defence, as are initiatives to adapt air defence to the task of intercepting any projectile in flight. In some countries, such as Britain and Germany during the Second World War, the Soviet Union, and modern NATO and the United States, ground-based air defence and air defence aircra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Garrison Artillery
The Royal Garrison Artillery (RGA) was formed in 1899 as a distinct arm of the British Army's Royal Regiment of Artillery serving alongside the other two arms of the Regiment, the Royal Field Artillery (RFA) and the Royal Horse Artillery (RHA). The RGA were the 'technical' branch of the Royal Artillery who were responsible for much of the professionalisation of technical gunnery that was to occur during the First World War. It was originally established to man the guns of the British Empire's forts and fortresses, including coastal artillery batteries, the heavy gun batteries attached to each infantry division and the guns of the siege artillery. The RGA was amalgamated with the RFA in 1924, from which time the only two arms within the Royal Regiment of Artillery have been the Royal Artillery and the Royal Horse Artillery. Organisation The Royal Garrison Artillery came into existence as a separate entity when existing coastal defence, mountain, siege and heavy batteries of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Expeditionary Force (World War II)
The British Expeditionary Force (BEF) was the name of the contingent of the British Army sent to France in 1939 after Britain and France declared war on Nazi Germany on 3 September, beginning the Second World War. The BEF existed from 2 September 1939 when the BEF GHQ was formed until 31 May 1940, when GHQ closed down and its troops reverted to the command of Home Forces. During the 1930s, the British government had planned to deter war by abolishing the Ten Year Rule and rearming from the very low level of readiness of the early 1930s. The bulk of the extra money went to the Royal Navy and the Royal Air Force but plans were made to re-equip a small number of Army and Territorial Army divisions for service overseas. General Lord Gort was appointed to the command of the BEF on 3 September 1939 and the BEF began moving to France on 4 September 1939. The BEF assembled along the Belgian–French border. The BEF took their post to the left of the French First Army under the co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bofors 40 Mm Automatic Gun L/60
The Bofors 40 mm Automatic Gun L/60 (often referred to simply as the "Bofors 40 mm gun", the "Bofors gun" and the like, see name) is an anti-aircraft autocannon, designed in the 1930s by the Swedish arms manufacturer AB Bofors. The gun was designed as an intermediate anti-aircraft gun, filling the gap between fast firing close-range small calibre anti-aircraft guns and slower firing long-range high calibre anti-aircraft guns, a role which previously was filled by older outdated guns. The Bofors 40 mm L/60 was for its time perfectly suited for this role and outperformed competing designs in the years leading up to World War II in both effectiveness and reliability. It entered the export market around 1932 and was in service with 18 countries by 1939. Throughout World War II it became one of the most popular and widespread medium-weight anti-aircraft guns. It was used by the majority of the western Allies and some Axis powers such as Nazi Germany and Hungary. In the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RAF Regiment
The Royal Air Force Regiment (RAF Regiment) is part of the Royal Air Force and functions as a specialist corps. Founded by royal warrant in 1942, the Corps carries out soldiering tasks relating to the delivery of air power. Examples of such tasks are non-combatant evacuation operation (NEO), recovery of downed aircrew (joint personnel recovery – JPR), and in-depth defence of airfields by way of aggressively patrolling and actively seeking out infiltrators in a large area surrounding airfields. In addition the RAF Regiment provides Joint Terminal Attack Controllers (JTACs) to the British Army and Royal Marines, and provides flight size commitment to the Special Forces Support Group. The RAF Regiment Gunners are personnel trained in various disciplines such as infantry tactics, force protection, field craft, sniper, support special forces operations, CBRN (chemical, biological, radiological and nuclear) defence, equipped with advanced vehicles and detection measures. RAF Reg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QF 12 Pounder 12 Cwt AA Gun
QF may stand for: * Qantas, an airline of Australia (IATA code QF) * Qatar Foundation, a private, chartered, non-profit organization in the state of Qatar * Quality factor, in physics and engineering, a measure of the "quality" of a resonant system * Quick-firing gun, a sort of artillery piece * Quiverfull, a movement of Christians who eschew all forms of birth control * A gun breech that uses metallic cartridges (see British ordnance terms#QF) * Quds Force The Quds Force ( fa, نیروی قدس, niru-ye qods, Jerusalem Force) is one of five branches of Iran's Islamic Revolutionary Guard Corps (IRGC) specializing in unconventional warfare and military intelligence operations. U.S. Army's Iraq War ... an expeditionary warfare unit of IRGC {{disambig fr:QF ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HMAS Australia (1911)
HMAS ''Australia'' was one of three s built for the defence of the British Empire. Ordered by the Australian government in 1909, she was launched in 1911, and commissioned as flagship of the fledgling Royal Australian Navy (RAN) in 1913. ''Australia'' was the only capital ship ever to serve in the RAN. At the start of World War I, ''Australia'' was tasked with finding and destroying the German East Asia Squadron, which was prompted to withdraw from the Pacific by the battlecruiser's presence. Repeated diversions to support the capture of German colonies in New Guinea and Samoa, as well as an overcautious Admiralty, prevented the battlecruiser from engaging the German squadron before the latter's destruction. ''Australia'' was then assigned to North Sea operations, which consisted primarily of patrols and exercises, until the end of the war. During this time, ''Australia'' was involved in early attempts at naval aviation, and 11 of her personnel participated in the Zeebrugge Ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Front (World War I)
The Western Front was one of the main theatres of war during the First World War. Following the outbreak of war in August 1914, the German Army opened the Western Front by invading Luxembourg and Belgium, then gaining military control of important industrial regions in France. The German advance was halted with the Battle of the Marne. Following the Race to the Sea, both sides dug in along a meandering line of fortified trenches, stretching from the North Sea to the Swiss frontier with France, which changed little except during early 1917 and in 1918. Between 1915 and 1917 there were several offensives along this front. The attacks employed massive artillery bombardments and massed infantry advances. Entrenchments, machine gun emplacements, barbed wire and artillery repeatedly inflicted severe casualties during attacks and counter-attacks and no significant advances were made. Among the most costly of these offensives were the Battle of Verdun, in 1916, with a combined 700 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Explosive Booster
{{unreferenced, date=August 2011 An explosive booster is a sensitive explosive charge that acts as a bridge between a (relatively weak) conventional detonator and a low-sensitivity (but typically high-energy) explosive such as TNT. By itself, the initiating detonator would not deliver sufficient energy to set off the low-sensitivity charge. However, it detonates the primary charge (the booster), which then delivers an explosive shockwave that is sufficient to detonate the secondary, main, high-energy charge. Unlike C4 plastic explosive, not all explosives can be detonated simply by inserting a detonator and firing it. An initiator such as a shock tube, cannon fuse, or even a conventional detonator does not deliver sufficient shock to detonate charges comprising TNT, Composition B, ANFO and many other high explosives. Therefore, some form of "booster" is required to amplify the energy released by the detonator so that the main charge will detonate. At first, picric acid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zeppelin
A Zeppelin is a type of rigid airship named after the German inventor Count Ferdinand von Zeppelin () who pioneered rigid airship development at the beginning of the 20th century. Zeppelin's notions were first formulated in 1874Eckener 1938, pp. 155–157. and developed in detail in 1893.Dooley 2004, p. A.187. They were patented in Germany in 1895 and in the United States in 1899. After the outstanding success of the Zeppelin design, the word ''zeppelin'' came to be commonly used to refer to all rigid airships. Zeppelins were first flown commercially in 1910 by Deutsche Luftschiffahrts-AG (DELAG), the world's first airline in revenue service. By mid-1914, DELAG had carried over 10,000 fare-paying passengers on over 1,500 flights. During World War I, the German military made extensive use of Zeppelins as bombers and as scouts, resulting in over 500 deaths in bombing raids in Britain. The defeat of Germany in 1918 temporarily slowed the airship business. Although DELAG establish ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QF 13 Pounder 9 Cwt
The 13 pounder 9 cwt anti-aircraft gunIn the name, 13 pounder referred to the approximate weight of the standard shell, and 9 cwt referred to the weight of the barrel and breech (9 × 112 lb = 1008 lb), to differentiate it from other varieties of "13 pounder". became the standard mobile British anti-aircraft gun of the World War I era, especially in theatres outside Britain. History Earlier anti-aircraft guns based on 13 pounder and 18 pounder guns proved unsatisfactory, primarily due to their low muzzle velocities. On 18 February 1915 Sir John French, commander of the British Expeditionary Force in France, asked for an anti-aircraft gun with a muzzle velocity of . On 19 August 1915 the Army Council proposed adapting existing 18-pounder guns (3.3-inch bore) to use 13-pounder (3-inch) shells, thus meeting the requirement for higher velocity. This weapon combined an 18 pounder breech and barrel with a liner (sleeve) inserted to reduce the bor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ordnance QF 18 Pounder
The Ordnance QF 18-pounder,British military traditionally denoted smaller ordnance by the weight of its standard projectile, in this case approximately or simply 18-pounder gun, was the standard British Empire field gun of the First World War-era. It formed the backbone of the Royal Field Artillery during the war, and was produced in large numbers. It was used by British Forces in all the main theatres, and by British troops in Russia in 1919. Its calibre (84 mm) and shell weight were greater than those of the equivalent field guns in French (75 mm) and German (77 mm) service. It was generally horse drawn until mechanisation in the 1930s. The first versions were introduced in 1904. Later versions remained in service with British forces until early 1942. During the interwar period, the 18-pounder was developed into the early versions of the equally famous Ordnance QF 25-pounder, which would form the basis of the British artillery forces during and after the Seco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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