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155-518: The ASM program began in the mid-1980s, when the Army planned to simultaneously develop, produce, and field 24 new combat vehicles, including tanks , self-propelled artillery , infantry fighting vehicles , and other armored systems, under what was called the "Armored Family of Vehicles Program". The Army planned to base its armored modernization approach on a family of vehicles with a common chassis and common modular components. Army studies showed that using

310-563: A C-130 . In 1992 the Army selected FMC Corporation 's Close Combat Vehicle Light. This was redesignated as the M8 Armored Gun System . The AGS was canceled just before production in 1996 due to budget constraints. [REDACTED]  This article incorporates public domain material from websites or documents of the United States Army . Tank A tank is an armoured fighting vehicle intended as

465-505: A "heavy" tank for assaulting fixed positions, was redesigned during the war with armour and gun upgrades to allow it to take on anti-tank roles as well, and was reclassified as a medium tank. The second half of World War II saw an increased reliance on general-purpose medium tanks, which became the bulk of the tank combat forces. Generally, these designs massed about 25–30 t (25–30 long tons; 28–33 short tons), were armed with cannons around 75 mm (3.0 in), and powered by engines in

620-453: A 360º view of the tank's surroundings onto crew helmet-mounted displays or other display systems. MBTs, like previous models of tanks, move on continuous tracks , which allow a decent level of mobility over most terrain including sand and mud. They also allow tanks to climb over most obstacles. MBTs can be made water-tight, so they can even dive into shallow water (5 m (16 ft) with snorkel). However, tracks are not as fast as wheels;

775-617: A caterpillar track. It is true that in 1770 he patented a "machine, that should carry and lay down its own road", but this was Edgeworth's choice of words. His own account in his autobiography is of a horse-drawn wooden carriage on eight retractable legs, capable of lifting itself over high walls. The description bears no similarity to a caterpillar track. Armoured trains appeared in the mid-19th century, and various armoured steam and petrol-engined vehicles were also proposed. The machines described in Wells's 1903 short story The Land Ironclads are

930-463: A common chassis and common components could reduce future operational and support costs. However, the Army's effort was dramatically scaled back because of the high costs involved in developing and producing so many different systems. In March 1985, the Army downsized the program to its six highest priority vehicles: four to be built on a heavy common chassis (weighing 55 to 62 tons) and two on a medium chassis (weighing up to 36 tons). The downsized program

1085-891: A competitive contractor development phase. The four systems to be built on a common heavy chassis were the Block III tank, a main battle tank ; the Combat Mobility Vehicle, an engineering vehicle for mine clearance and other engineering tasks; the Advanced Field Artillery System, a self-propelled howitzer ; and the Future Infantry Fighting Vehicle, an infantry fighting vehicle . The chassis will have certain common elements such as engines, transmissions, suspensions, modular armor, and tracks. The ASM common heavy chassis could have actually been two chassis, one with

1240-515: A defeat on the Japanese 6th Army with his massed combined tank and air attack, the Soviets learned a lesson on the use of gasoline engines, and quickly incorporated those newly found experiences into their new T-34 medium tank during World War II . Prior to World War II, the tactics and strategy of deploying tank forces underwent a revolution. In August 1939, Soviet General Georgy Zhukov used

1395-406: A dual role, able to engage other armoured targets such as tanks and fortifications, and soft targets such as light vehicles and infantry. It is fixed to the turret, along with the loading and fire mechanism. Modern tanks use a sophisticated fire-control system , including rangefinders , computerized fire control, and stabilizers, which are designed to keep the cannon stable and aimed even if the hull

1550-523: A field gun in an armoured box on tracks . Major William E. Donohue, of the British Army's Mechanical Transport Committee, suggested fixing a gun and armoured shield on a British type of track-driven vehicle. The first armoured car was produced in Austria in 1904. However, all were restricted to rails or reasonably passable terrain. It was the development of a practical caterpillar track that provided

1705-596: A functional vehicle pushed the limits of mechanical technology. This limited the specific battlefield capabilities any one tank design could be expected to fulfill. A design might have good speed, armour, or firepower, but not all three together. Facing the deadlock of trench warfare , the first tank designs focused on crossing wide trenches, requiring very long and large vehicles, such as the British Mark I tank and successors; these became known as heavy tanks . Tanks that focused on other combat roles were smaller, like

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1860-401: A high level of self-protection, and which is not designed and equipped primarily to transport combat troops." Originally, most MBTs relied on steel armour to defend against various threats. As newer threats emerged, however, the defensive systems used by MBTs had to evolve to counter them. One of the first new developments was the use of explosive reactive armour (ERA), developed by Israel in

2015-605: A human to load. This reduces the silhouette which improves the MBT's target profile. However, with a manual loader, the rounds can be isolated within a blowout chamber, rather than a magazine within the turret, which could improve crew survivability. However, the force of a modern depleted uranium APFSDS round at the muzzle can exceed 6000 kN (a rough estimate, considering a uranium 60 cm/2 cm rod, 19g/cm , @ 1,750 m/s). Composite+reactive armour could withstand this kind of force through its deflection and deformation, but with

2170-509: A humorous objection to this, remarking that the War Office pundits would probably contract the description to 'W.C.'s for Russia', and that we had better forestall this by merely labelling the packages 'Tanks'. So tanks they became, and tanks they have remained." This appears to be an imperfect recollection. He says that the name problem arose "when we shipped the first two vehicles to France the following year" (August 1916), but by that time

2325-504: A key component of modern armies. Modern MBTs seldom operate alone, as they are organized into armoured units that include the support of infantry , who may accompany the tanks in infantry fighting vehicles . They are also often supported by surveillance or ground-attack aircraft . The average weight of MBTs varies from country to country. The average weight of Western MBTs is usually greater than that of Russian or Chinese MBTs. During World War I , combining tracks, armour, and guns into

2480-603: A large scale, and it was their superior tactics and French blunders, not superior weapons, that made the "blitzkrieg" so successful in May 1940. For information regarding tank development in this period, see tank development between the wars . Germany, Italy and the Soviet Union all experimented heavily with tank warfare during their clandestine and "volunteer" involvement in the Spanish Civil War , which saw some of

2635-606: A medium chassis were underway, these systems would initially be integrated on a surrogate modified Bradley Fighting Vehicle chassis. The Line-of-Sight Anti-Tank vehicle was the intended successor to the M901 Improved TOW Vehicle . The Army initiated development of the LOSAT missile prior to the ASM program. LOSAT was tested on a surrogate chassis. The Army tested the missile from 1990 to 1991. On December 5, 1990,

2790-810: A meeting took place of the Inter-Departmental Conference (including representatives of the Director of Naval Construction's Committee, the Admiralty, the Ministry of Munitions, and the War Office). Its purpose was to discuss the progress of the plans for what were described as "Caterpillar Machine Gun Destroyers or Land Cruisers." In his autobiography, Albert Gerald Stern (Secretary to the Landship Committee, later head of

2945-591: A more traditional role in close cooperation with infantry units, but in the Battle of France deep independent armoured penetrations were executed by the Germans, a technique later called blitzkrieg . Blitzkrieg used innovative combined arms tactics and radios in all of the tanks to provide a level of tactical flexibility and power that surpassed that of the Allied armour. The French Army , with tanks equal or superior to

3100-553: A move some industry officials characterized as a wake-up call for the Army. The Army had not been responsive to Congressional calls to prioritize AFAS. Funding for ATTD was restored in a conference report accompanying the Defense Appropriations Bill, however overall ASM funding was reduced $ 100 million. In a memo to Congress in October 1991, the Army agreed to align its strategy with Congress. In December 1990,

3255-428: A new era of combat, armoured warfare . Until the invention of the main battle tank , tanks were typically categorized either by weight class ( light , medium , heavy or superheavy tanks ) or doctrinal purpose ( breakthrough- , cavalry- , infantry- , cruiser- , or reconnaissance tanks). Some are larger and more thickly armoured and with large guns, while others are smaller, lightly armoured, and equipped with

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3410-678: A new universal tank was rendered unnecessary. The Centurion, entering service just as World War II finished, was a multi-role tank that subsequently formed the main armoured element of the British Army of the Rhine , the armed forces of the British Empire and Commonwealth forces, and subsequently many other nations through exports, whose cost was met largely by the US. The introduction of the 84 mm (3.3 in) 20-pounder gun in 1948 gave

3565-443: A primary offensive weapon in front-line ground combat . Tank designs are a balance of heavy firepower , strong armour , and battlefield mobility provided by tracks and a powerful engine; their main armament is often mounted within a turret . They are a mainstay of modern 20th and 21st century ground forces and a key part of combined arms combat. Modern tanks are versatile mobile land weapons platforms whose main armament

3720-584: A repeat of the German successes of 1940. Despite early successes against the Soviets, the Germans were forced to up-gun their Panzer IVs, and to design and build both the larger and more expensive Tiger heavy tank in 1942, and the Panther medium tank the following year. In doing so, the Wehrmacht denied the infantry and other support arms the production priorities that they needed to remain equal partners with

3875-535: A second hit in the same area, an armour breach is inevitable. As such, the speed of follow up shots is crucial within tank to tank combat. As secondary weapons, an MBT usually uses between two and four machine guns to engage infantry and light vehicles. Many MBTs mount one heavy caliber anti-aircraft machine gun (AAMG), usually of .50 caliber (like the M2 Browning or DShK ), which can be used against helicopters and low flying aircraft. However, their effectiveness

4030-472: A small number of middle-ranking British Army officers tried to persuade the War Office and the Government to consider the creation of armoured vehicles. Amongst their suggestions was the use of caterpillar tractors, but although the Army used many such vehicles for towing heavy guns, it could not be persuaded that they could be adapted as armoured vehicles. The consequence was that early tank development in

4185-491: A smaller caliber and lighter gun. These smaller tanks move over terrain with speed and agility and can perform a reconnaissance role in addition to engaging hostile targets. The smaller, faster tank would not normally engage in battle with a larger, heavily armoured tank, except during a surprise flanking manoeuvre . The word tank was first applied in a military context to British "landships" in 1915 to keep their nature secret before they entered service. On 24 December 1915,

4340-472: A step closer, insofar as they are armour-plated, have an internal power plant, and are able to cross trenches. Some aspects of the story foresee the tactical use and impact of the tanks that later came into being. However, Wells's vehicles were driven by steam and moved on pedrail wheels , technologies that were already outdated at the time of writing. After seeing British tanks in 1916, Wells denied having "invented" them, writing, "Yet let me state at once that I

4495-462: A surrogate tank chassis. The Army planned to award prototype development contracts for the CMV in 1994. The full-scale development phase would begin in 1998. Production would begin in 2002. First-unit-equipped would occur in 2004. In April 1991, the Army awarded BMY Combat Systems a $ 10.9 million contract for a CMV Advanced Technology Transition Demonstrator. A near-term solution was eventually desired so

4650-473: A surrogate tank chassis. The demonstrator for the Advanced Field Artillery System would integrate a new artillery cannon and fire control system on a surrogate chassis. The demonstrator for the Future Infantry Fighting Vehicle would integrate a new cannon and fire control system on a modified existing chassis. The Army planned to award prototype development contracts for the other three vehicles in 1994. The prototypes would integrate each system's unique weapons on

4805-619: A target and thereby enhance the first-round hit probability. The United States's experience in the Vietnam War contributed to the idea among army leadership that the role of the main battle tank could be fulfilled by attack helicopters . During the Vietnam War, helicopters and missiles competed with MBTs for research money. Though the Persian Gulf War reaffirmed the role of main battle tanks, MBTs were outperformed by

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4960-541: A total of 150. Production models of "Male" tanks (armed with naval cannon and machine guns) and "Females" (carrying only machine-guns) would go on to fight in history's first tank action at the Somme in September 1916. Great Britain produced about 2,600 tanks of various types during the war. The first tank to engage in battle was designated D1 , a British Mark I Male, during the Battle of Flers-Courcelette (part of

5115-458: A trend towards heavier weight and greater firepower during World War II; speed was not a substitute for armour and firepower. An increasing variety of anti-tank weapons and the perceived threat of a nuclear war prioritized the need for additional armour. The additional armour prompted the design of even more powerful guns. The main battle tank thus took on the role the British had once called

5270-534: A world of shaped charge weapons, and new designs rapidly emerged from most armed forces. The Quebec conference in 1957 between the US, UK and Canada identified the MBT as the route for development rather than separate medium and heavy tanks. The concept of the medium tank gradually evolved into the MBT in the 1960s, as it was realized that medium tanks could carry guns (such as the American 90 mm (3.5 in), Soviet 100 mm (3.9 in), and especially

5425-415: Is a large- caliber tank gun mounted in a rotating gun turret , supplemented by machine guns or other ranged weapons such as anti-tank guided missiles or rocket launchers . They have heavy vehicle armour which provides protection for the crew, the vehicle's munition storage, fuel tank and propulsion systems. The use of tracks rather than wheels provides improved operational mobility which allows

5580-474: Is also used colloquially. The Polish name czołg , derived from verb czołgać się ("to crawl"), is used, depicting the way of machine's movement and its speed. In Hungarian the tank is called harckocsi (combat wagon), albeit tank is also common. In Japanese, the term sensha ( 戦車 , lit. "battle vehicle") is taken from Chinese and used, and this term is likewise borrowed into Korean as jeoncha ( 전차 / 戰車 ); more recent Chinese literature uses

5735-435: Is considered one of the fastest MBTs in existence. The MBT is often cumbersome in traffic and frequently obstructs the normal flow of traffic. The tracks can damage some roads after repeated use. Many structures like bridges do not have the load capacity to support an MBT. In the fast pace of combat, it is often impossible to test the sturdiness of these structures. Though appreciated for its excellent off-road characteristics,

5890-456: Is limited in comparison to dedicated anti-aircraft artillery. The tank's machine guns are usually equipped with between 500 and 3,000 rounds each. Performing situational awareness and communicating is one of four primary MBT functions. For situational awareness, the crew can use a circular review system combining augmented reality and artificial Intelligence technologies. These systems use several externally mounted video sensors to transfer

6045-474: Is performed in high-intensity conflicts where reconnaissance by light vehicles would be insufficient due to the necessity to "fight" for information. In asymmetric warfare, main battle tanks are deployed in small, highly concentrated units. MBTs fire only at targets at close range and instead rely on external support such as unmanned aircraft for long range combat. Main battle tanks have significantly varied characteristics. Procuring too many varieties can place

6200-504: Is really to Mr Winston Churchill that the credit is due more than to anyone else. He took up with enthusiasm the idea of making them a long time ago, and he met with many difficulties. He converted me, and at the Ministry of Munitions he went ahead and made them. The admiralty experts were invaluable, and gave the greatest possible assistance. They are, of course, experts in the matter of armour plating. Major Stern , (formerly an officer in

6355-524: Is reserved for ammunition. External space enhances independence of logistics and can accommodate extra fuel and some personal equipment of the crew. The Israeli Merkava can accommodate crew members displaced from a destroyed vehicle in its ammunition compartment. Emphasis is placed on selecting and training main battle tank crew members. The crew must perform their tasks faultlessly and harmoniously so commanders select teams taking into consideration personalities and talents. The main battle tank fulfills

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6510-513: Is turning or shaking, making it easier for the operators to fire on the move and/or against moving targets. Gun-missile systems are complicated and have been particularly unsatisfactory to the United States who abandoned gun-missile projects such as the M60A2 and MBT-70 , but have been diligently developed by the Soviet Union, who even retrofitted them to T-55 tanks, in an effort to double

6665-512: The Samokhodnaya ustanovka families of AFV's for the Soviets: such turretless, casemate -style tank destroyers and assault guns were less complex, stripped down tanks carrying heavy guns, solely firing forward. The firepower and low cost of these vehicles made them attractive but as manufacturing techniques improved and larger turret rings made larger tank guns feasible, the gun turret

6820-615: The Advanced Field Artillery System and Future Armored Resupply Vehicle-Ammunition replaced the Block III as the service's first ASM priority. The Future Infantry Fighting Vehicle was the M2 Bradleys intended successor. It was expected to have a more lethal autocannon, improved anti-tank missile system. The crew was reduced from three, of the Bradley, to two. The Advanced Field Artillery System (AFAS),

6975-585: The Cold War , the main battle tank concept arose and became a key component of modern armies. In the 21st century, with the increasing role of asymmetrical warfare and the end of the Cold War, that also contributed to the increase of cost-effective anti-tank rocket propelled grenades (RPGs) worldwide and its successors, the ability of tanks to operate independently has declined. Modern tanks are more frequently organized into combined arms units which involve

7130-487: The Cromwell tank , combined with efficiency savings elsewhere in the design, almost doubled the horsepower for cruiser tanks. This led to speculation of a "Universal Tank", able to take on the roles of both a cruiser and an infantry tank by combining heavy armour and manoeuvrability. Field Marshal Bernard Montgomery is acknowledged as the main advocate of the British universal tank concept as early as 1943, according to

7285-494: The Hussite-wars . The continuous " caterpillar track " arose from attempts to improve the mobility of wheeled vehicles by spreading their weight, reducing ground pressure, and increasing their traction. Experiments can be traced back as far as the 17th century, and by the late nineteenth they existed in various recognizable and practical forms in several countries. It is frequently claimed that Richard Lovell Edgeworth created

7440-522: The Republican side were equipped with cannon, and of those 64 nearly all were World War I vintage Renault FT tanks, while the 331 Soviet supplied machines had 45mm main guns and were of 1930s manufacture. The balance of Nationalist tanks were machine gun armed. The primary lesson learned from this war was that machine gun armed tanks had to be equipped with cannon, with the associated armour inherent to modern tanks. The five-month-long war between

7595-577: The Second Battle of El Alamein , the Afrika Korps, crippled by disruptions in their supply lines, had 95% of its tanks destroyed and was forced to retreat by a massively reinforced Eighth Army , the first in a series of defeats that would eventually lead to the surrender of the remaining Axis forces in Tunisia . When Germany launched its invasion of the Soviet Union, Operation Barbarossa ,

7750-593: The Second Battle of Fallujah the United States Marines brought in two extra companies of M1s. Britain deployed its Challenger 2 tanks to support its operations in southern Iraq. Advanced armour has reduced crew fatalities but has not improved vehicle survivability. Small unmanned turrets on top of the cupolas called remote controlled weapon stations armed with machine guns or mortars provide improved defence and enhance crew survivability. Experimental tanks with unmanned turrets locate crew members in

7905-666: The Senate Appropriations Committee (SAC) passed similar language deferring the Block III main battle tank and zeroing the $ 113 million R&D request for the Block III tank. The House Armed Services Committee directed the Army to make the AGS its top priority modernization program. In September 1991, for FY1992 SAC slashed $ 125 million from the Advanced Technology Transition Demonstrator ATTD) common chassis in

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8060-513: The T-34 , one of the predecessors of the main battle tank . Less than two weeks later, Germany began their large-scale armoured campaigns that would become known as blitzkrieg ("lightning war") – massed concentrations of tanks combined with motorized and mechanized infantry , artillery and air power designed to break through the enemy front and collapse enemy resistance. The widespread introduction of high-explosive anti-tank warheads during

8215-532: The T-72 . The United States Army used 1,100 M1 Abrams in the course of the Iraq War . They proved to have an unexpectedly high vulnerability to improvised explosive devices . A relatively new type of remotely detonated mine, the explosively formed penetrator , was used with some success against American armoured vehicles. However, with upgrades to their rear armour, M1s proved to be valuable in urban combat; at

8370-776: The Wolseley Tool and Motor Car Company in Birmingham and tested in Switzerland and Norway, and can be seen in action in Herbert Ponting 's 1911 documentary film of Scott's Antarctic Terra Nova Expedition . Scott died during the expedition in 1912, but expedition member and biographer Apsley Cherry-Garrard credited Scott's "motors" with the inspiration for the British World War I tanks, writing: "Scott never knew their true possibilities; for they were

8525-543: The attack helicopter . Other strategists considered that the MBT was entirely obsolete in light of the efficacy and speed with which coalition forces neutralized Iraqi armour. In asymmetric warfare , threats such as improvised explosive devices and mines have proven effective against MBTs. In response, nations that face asymmetric warfare, such as Israel, are reducing the size of their tank fleet and procuring more advanced models. Conversely, some insurgent groups like Hezbollah themselves operate main battle tanks, such as

8680-586: The "universal tank", exemplified by the Centurion, filling almost all battlefield roles. Typical main battle tanks were as well armed as any other vehicle on the battlefield, highly mobile, and well armoured. Yet they were cheap enough to be built in large numbers. The first Soviet main battle tank was the T-64A (the T-54/55 and T-62 were considered "medium" tanks) and the first American nomenclature-designated MBT

8835-609: The 400–500 hp (300–370 kW) range. Notable examples include the Soviet T-34 (the most-produced tank at that time) and the US M4 Sherman . Late war tank development placed increased emphasis on armour, armament, and anti-tank capabilities for medium tanks: Britain had continued on the path of parallel development of cruiser tanks and infantry tanks. Development of the Rolls-Royce Meteor engine for

8990-616: The Advanced Field Artillery System and 2004 for the remaining two vehicles. The Army's initial development priority was the Block III, with the other heavy chassis systems to follow. The Block III was the service's replacement for the M1 Abrams . Two gun tubes, 120 mm and 140 mm, were developed for the Advanced Tank Cannon System. The 140 mm tube was considered necessary if the Soviets ever developed an advanced main battle tank. The service figured that

9145-478: The Arab world, tanks are called Dabbāba (after a type of siege engine ). In Italian, a tank is a " carro armato " (lit. "armed wagon"), without reference to its armour. Norway uses the term stridsvogn and Sweden the similar stridsvagn (lit. "battle wagon", also used for "chariots"), whereas Denmark uses kampvogn (lit. fight wagon). Finland uses panssarivaunu (armoured wagon), although tankki

9300-447: The Army awarded Teledyne Motors and Armored Vehicle Technologies Associated (a joint venture of FMC Corporation and General Dynamics Land Systems Division ) a contract to develop ASM Advanced Technology Transition Demonstrators. Teledyne received $ 343 million and Armored Vehicles received $ 287 million. Both the heavy and medium chassis would share some commonalities. In response to funding shortfall estimates beyond fiscal year 1997,

9455-479: The Army canceled Armored Systems Modernization due to changing budgetary priorities due to the collapse of the Soviet Union. The Army restructured two contracts worth $ 629 million between Teledyne Continental Motors and Armored Vehicle Technologies Associated. The funds were directed towards engine and electric drive system research. The Army developed the heavy chassis using a two-pronged development strategy: an in-house Army component development and test program and

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9610-451: The Army developed or independently developed components. After the chassis was developed, the Army planned to select one of the contractors to develop the tank. This selection was scheduled for fiscal year 1994, and the selected contractor was required to develop a prototype tank integrating the common heavy chassis with the tank weapons components. The contractor was allowed to choose which weapons components to use. The prototype tank phase

9765-627: The British L7 105 mm (4.1 in) ) that could penetrate any practical level of armour then existing at long range. Also, the heaviest tanks were unable to use most existing bridges. The World War II concept of heavy tanks , armed with the most powerful guns and heaviest armour, became obsolete because the large tanks were too expensive and just as vulnerable to damage by mines, bombs, rockets, and artillery. Likewise, World War II had shown that lightly armed and armoured tanks were of limited value in most roles. Even reconnaissance vehicles had shown

9920-477: The British War Office . In Russia, Vasiliy Mendeleev designed a tracked vehicle containing a large naval gun. All of these ideas were rejected and, by 1914, forgotten (although it was officially acknowledged after the war that de Mole's design was at least the equal to the initial British tanks). Various individuals continued to contemplate the use of tracked vehicles for military applications, but by

10075-624: The British and French built thousands of tanks in World War I, Germany was unconvinced of the tank's potential, and did not have enough resources, thus it built only twenty. Tanks of the interwar period evolved into the much larger and more powerful designs of World War II . Important new concepts of armoured warfare were developed; the Soviet Union launched the first mass tank/air attack at Khalkhin Gol ( Nomonhan ) in August 1939, and later developed

10230-412: The Cold War had been hammered out in the closing stages of World War II. Large turrets, capable suspension systems, greatly improved engines, sloped armour and large-caliber (90 mm and larger) guns were standard. Tank design during the Cold War built on this foundation and included improvements to fire control , gyroscopic gun stabilization, communications (primarily radio) and crew comfort and saw

10385-486: The Committee in view of his experience with the engineering methods it was felt might be required; the two other members were naval officers, and a number of industrialists were engaged as consultants. So many played a part in its long and complicated development that it is not possible to name any individual as the sole inventor of the tank. However leading roles were played by Lt Walter Gordon Wilson R.N. who designed

10540-679: The Defense Acquisition Board approved continued development of the missile. The Army planned to begin full-scale development of the system in early 1992, with production in 1997. As of July 1990, the chassis was planned to be based on the Bradley Fighting Vehicle . Future Armored Resupply Vehicle-Ammunition (FARV-A) was the planned replacement for the M992 Field Artillery Ammunition Support Vehicle . FARV-A

10695-473: The Defense Acquisition Board reviewed the Army's ASM program and directed that the Army develop a more realistic acquisition program. In its response, the Army insisted that the ASM program was affordable. The Army added a prototype phase to each of the vehicles at the direction of the Board in August 1990. The Board wanted the prototype phase to minimize integration risks brought about by the separate development of

10850-501: The English-derived 坦克 tǎnkè (tank) as opposed to 戰車 zhànchē (battle vehicle) used in earlier days. The modern tank is the result of a century of development from the first primitive armoured vehicles, due to improvements in technology such as the internal combustion engine, which allowed the rapid movement of heavy armoured vehicles. As a result of these advances, tanks underwent tremendous shifts in capability in

11005-460: The FT was its engine located at the rear. This pattern, with the gun located in a mounted turret and the engine at the back, has become the standard for most succeeding tanks across the world even to this day. The FT was the most numerous tank of the war; over 3,000 were made by late 1918. Germany fielded very few tanks during World War I , and started development only after encountering British tanks on

11160-546: The French Leclerc , or the Russian/Ukrainian T-64 , T-72 , T-80 , T-84 , T-90 , and T-14 and, for this reason, the crew can be reduced to 3 members. MBTs with an autoloader require one less crew member and the autoloader requires less space than its human counterpart, allowing for a reduction in turret size. Further, an autoloader can be designed to handle rounds which would be too difficult for

11315-551: The French Renault FT ; these were light tanks or tankettes . Many late-war and inter-war tank designs diverged from these according to new, and mostly untried, concepts for future tank roles and tactics. Each nation tended to create its own list of tank classes with different intended roles, such as "cavalry tanks", "breakthrough tanks", "fast tanks", and "assault tanks". The British maintained cruiser tanks that in order to achieve high speed and hence manoeuvrability in

11470-561: The German tanks in both quality and quantity, employed a linear defensive strategy in which the armoured cavalry units were made subservient to the needs of the infantry armies to cover their entrenchment in Belgium. In addition, they lacked radios in many of their tanks and headquarters, which limited their ability to respond to German attacks. In accordance with blitzkrieg methods, German tanks bypassed enemy strongpoints and could radio for close air support to destroy them, or leave them to

11625-422: The MBT can become immobilized in muddy conditions. The high cost of MBTs can be attributed in part to the high-performance engine-transmission system and to the fire control system. Also, propulsion systems are not produced in high enough quantities to take advantage of economies of scale . Crew fatigue limits the operational range of MBTs in combat. Reducing the crew to three and relocating all crewmembers from

11780-616: The Mechanical Warfare Supply Department) says that at that meeting: Mr. (Thomas J.) Macnamara ( M.P. , and Parliamentary and Financial Secretary to the Admiralty ) then suggested, for secrecy's sake, to change the title of the Landship Committee. Mr. d'Eyncourt agreed that it was very desirable to retain secrecy by all means, and proposed to refer to the vessel as a "Water Carrier". In Government offices, committees and departments are always known by their initials. For this reason I, as Secretary, considered

11935-639: The Royal Naval Air Service) a business man at the Ministry of Munitions had charge of the work of getting them built, and he did the task very well. Col Swinton and others also did valuable work. Whilst several experimental machines were investigated in France, it was a colonel of artillery, J.B.E. Estienne , who directly approached the Commander-in-Chief with detailed plans for a tank on caterpillar tracks, in late 1915. The result

12090-483: The Somme. The A7V , the only type made, was introduced in March 1918 with just 20 being produced during the war. The first tank versus tank action took place on 24 April 1918 at the Second Battle of Villers-Bretonneux , France, when three British Mark IVs met three German A7Vs . Captured British Mk IVs formed the bulk of Germany's tank forces during World War I; about 35 were in service at any one time. Plans to expand

12245-477: The Soviet Union and the Japanese 6th Army at Khalkhin Gol ( Nomonhan ) in 1939 brought home some lessons . In this conflict, the Soviets fielded over two thousand tanks, to the around 73 cannon armed tanks deployed by the Japanese, the major difference being that Japanese armour were equipped with diesel engines as opposed to the Russian tanks equipped with petrol engines. After General Georgy Zhukov inflicted

12400-413: The Soviet Union's fighting capability. The Soviet Union made novel advancements to the weapon systems including mechanical autoloaders and anti-tank guided missiles . Autoloaders were introduced to replace the human loader, permitting the turret to be reduced in size, making the tank smaller and less visible as a target, while missile systems were added to extend the range at which a vehicle could engage

12555-578: The Soviets had a superior tank design, the T-34 . A lack of preparations for the Axis surprise attack, mechanical problems, poor training of the crews and incompetent leadership caused the Soviet machines to be surrounded and destroyed in large numbers. However, interference from Adolf Hitler , the geographic scale of the conflict, the dogged resistance of the Soviet combat troops, and the Soviets' massive advantages in manpower and production capability prevented

12710-606: The Soviets, when entering World War II six months later (December 1941), the United States' mass production capacity enabled it to rapidly construct thousands of relatively cheap M4 Sherman medium tanks. A compromise all round, the Sherman was reliable and formed a large part of the Anglo-American ground forces, but in a tank-versus-tank battle was no match for the Panther or Tiger. Numerical and logistical superiority and

12865-528: The US, Charles de Gaulle in France, and Mikhail Tukhachevsky in the USSR. Liddell Hart held a more moderate view that all arms – cavalry, infantry and artillery – should be mechanized and work together. The British formed the all-arms Experimental Mechanized Force to test the use of tanks with supporting forces. In the Second World War only Germany would initially put the theory into practice on

13020-772: The United Kingdom was carried out by the Royal Navy . As the result of an approach by Royal Naval Air Service officers who had been operating armoured cars on the Western Front, the First Lord of the Admiralty , Winston Churchill , formed the Landship Committee , on 20 February 1915. The Director of Naval Construction for the Royal Navy, Eustace Tennyson d'Eyncourt , was appointed to head

13175-455: The Xiongnu's powerful cavalry charges , and allowed Han troops to utilize their ranged weapons ' advantages of precision . This forced a stalemate and allowed time for his troops to recover strength, before using the cover of a sandstorm to launch a counteroffensive which overran the nomads . Many sources imply that Leonardo da Vinci and H. G. Wells in some way foresaw or "invented"

13330-411: The attack carried less armour, and infantry tanks which operating at infantryman pace could carry more armour. After years of isolated and divergent development, the various interwar tank concepts were finally tested with the start of World War II . In the chaos of blitzkrieg , tanks designed for a single role often found themselves forced into battlefield situations they were ill-suited for. During

13485-494: The basis of blitzkrieg in the opening stages of World War II. During World War II , the first conflict in which armoured vehicles were critical to battlefield success, the tank and related tactics developed rapidly. Armoured forces proved capable of tactical victory in an unprecedentedly short amount of time, yet new anti-tank weaponry showed that the tank was not invulnerable. During the Invasion of Poland, tanks performed in

13640-538: The combined force of tanks and airpower at Nomonhan against the Japanese 6th Army; Heinz Guderian , a tactical theoretician who was heavily involved in the formation of the first independent German tank force, said "Where tanks are, the front is", and this concept became a reality in World War II. Guderian's armoured warfare ideas, combined with Germany's existing doctrines of Bewegungskrieg (" maneuver warfare ") and infiltration tactics from World War I, became

13795-537: The common chassis and individual weapon components. In December 1991, Army Secretary Michael P. W. Stone proposed delaying the Block III tank, Future Infantry Fighting Vehicle, and Combat Mobility Vehicle. The Advanced Field Artillery System (AFAS) and Future Armored Resupply Vehicle-Ammunition (FARV-A) were given top priority, as requested by Congress. In March, the Congressional Budget Office proposed cutting ASM funding to $ 100 million over

13950-430: The common heavy chassis. The full-scale development phase would begin in 1998 for the Advanced Field Artillery System and the Combat Mobility Vehicle and in 1997 for the Future Infantry Fighting Vehicle. Vehicle production was scheduled to begin in 2001 for the Advanced Field Artillery System and Future Infantry Fighting Vehicle and in 2002 for the Combat Mobility Vehicle. The scheduled first-unit-equipped dates were 2003 for

14105-605: The contract was modified in September 1992. This became the " Breacher ". The ASM Program plans called for two systems to be built on a common medium chassis: the Line-of-Sight Anti-Tank system, a vehicle carrying a high-speed, kinetic-energy anti-tank missile; and the Future Armored Resupply Vehicle-Ammunition, an artillery resupply vehicle for the Advanced Field Artillery System. However, while work on requirements for

14260-614: The design of a tank that had the firepower of a super-heavy tank , the armour protection of a heavy tank , and the mobility of a light tank , in a package with the weight of a medium tank . The first designated MBT was the British Chieftain tank , which during its development in the 1950s was re-designed as an MBT. Throughout the 1960s and 1970s, the MBT replaced almost all other types of tanks, leaving only some specialist roles to be filled by lighter designs or other types of armoured fighting vehicles . Main battle tanks are

14415-444: The detonation of ERA blocks creates a hazard to any supporting infantry near the tank. Despite this drawback, it is still employed on many Russian MBTs, the latest generation Kontakt-5 being capable of defeating both high-explosive anti-tank (HEAT) and kinetic energy penetrator threats. The Soviets also developed Active Protection Systems (APS) designed to more actively neutralize hostile projectiles before they could even strike

14570-533: The direct ancestors of the 'tanks' in France". In 1911, a Lieutenant Engineer in the Austrian Army, Günther Burstyn , presented to the Austrian and Prussian War Ministries plans for a light, three-man tank with a gun in a revolving turret, the so-called Burstyn-Motorgeschütz. In the same year an Australian civil engineer named Lancelot de Mole submitted a basic design for a tracked, armoured vehicle to

14725-522: The earliest examples of successful mechanized combined arms —such as when Republican troops, equipped with Soviet-supplied tanks and supported by aircraft, eventually routed Italian troops fighting for the Nationalists in the seven-day Battle of Guadalajara in 1937. However, of the nearly 700 tanks deployed during this conflict, only about 64 tanks representing the Franco faction and 331 from

14880-520: The early 1980s to defend against the shaped-charge warheads of modern anti-tank guided missiles and other such high-explosive anti-tank (HEAT) projectiles. This technology was subsequently adopted and expanded upon by the United States and the Soviet Union. MBT armour is concentrated at the front of the tank, where it is layered up to 33 centimetres (13 in) thick. Missiles are cheap and cost-effective anti-tank weapons. ERA can be quickly added to vehicles to increase their survivability. However,

15035-690: The early 1990s and 2000s; surviving numerous impacts from 1950s, 1960s, and 1970s era rocket-propelled grenades with negligible damage. It is much less efficient against later models of RPGs. For example, the RPG-29 from the 1980s is able to penetrate the frontal hull armour of the Challenger 2. Main battle tanks are equipped with a main gun and at least one machine gun . MBT main guns are generally between 100 mm (3.9 in) and 125 mm (4.9 in) caliber, and can fire both anti-armour and, more recently, anti-personnel rounds. The cannon serves

15190-400: The effect of protecting the vehicle's occupants from nuclear explosion radiation). By the late 1970s, MBTs were manufactured by China, France, West Germany, Britain, India, Italy, Japan, the Soviet Union, Sweden, Switzerland, and the United States. The Soviet Union's war doctrine depended heavily on the main battle tank. Any weapon advancement making the MBT obsolete could have devastated

15345-988: The effective range of the vehicle's fire. The MBT's role could be compromised because of the increasing distances involved and the increased reliance on indirect fire . The tank gun is still useful in urban combat for precisely delivering powerful fire while minimizing collateral damage. High-explosive anti-tank (HEAT), and some form of high velocity kinetic energy penetrator , such as armour-piercing fin-stabilized discarding sabot (APFSDS) rounds are carried for anti-armour purposes. Anti-personnel rounds such as high explosive or high explosive fragmentation have dual purpose. Less common rounds are Beehive anti-personnel rounds , and high-explosive squash head (HESH) rounds used for both anti-armour and bunker busting. Usually, an MBT carries 30–50 rounds of ammunition for its main tank gun , usually split between HE, HEAT, and KEP rounds. Some MBTs may also carry smoke or white phosphorus rounds. Some MBTs are equipped with an autoloader , such as

15500-471: The engine in the rear and one with the engine in the front because tanks traditionally have had the engine in the rear, while self-propelled artillery and infantry fighting vehicles have had the engine in the front. However, the chassis were required to be sufficiently similar to permit production on a single assembly line. The Army's initial development priority was the Block III tank, with the other heavy chassis systems to follow. The Army planned for each of

15655-419: The era. Later came British Chobham armour . This composite armour used layers of ceramics and other materials to help attenuate the effects of HEAT munitions. Another threat came by way of the widespread use of helicopters in battle. Before the advent of helicopters, armour was heavily concentrated to the front of the tank. This new threat caused designs to distribute armour on all sides of the tank (also having

15810-520: The first time in September 1915 and served to develop the form of the track but an improved design, better able to cross trenches, swiftly followed and in January 1916 the prototype, nicknamed "Mother", was adopted as the design for future tanks. The first order for tanks was placed on 12 February 1916, and a second on 21 April. Fosters built 37 (all "male"), and Metropolitan Railway Carriage and Wagon Company , of Birmingham, 113 (38 "male" and 75 "female"),

15965-615: The following five years. In June, the Army delivered a plan that would additionally cut back on funding for LOSAT. The plan called for wrapping up the common chassis program by May 1993. Later in June, the Office of the Secretary of Defense approved the Army's plan. Under the plan the Army would reduce the scope of the common chassis contracts, with termination occurring in FY23. In October 1992,

16120-416: The future arrangements were under discussion for transporting the first landships to France a question arose as to how, from a security point of view, the consignment should be labelled. To justify their size we decided to call them 'water-carriers for Russia' —the idea being that they should be taken for some new method of taking water to forward troops in the battle areas. Lt.-Col. Swinton ... raised

16275-645: The gearbox and developed practical tracks and by William Tritton whose agricultural machinery company, William Foster & Co. in Lincoln, Lincolnshire , England built the prototypes . On 22 July 1915, a commission was placed to design a machine that could cross a trench 4 ft wide. Secrecy surrounded the project with the designers locking themselves in a room at the White Hart Hotel in Lincoln. The committee's first design, Little Willie , ran for

16430-440: The gearbox and hull, and by William Tritton of William Foster and Co. , who designed the track plates. This was a prototype of a new design that would become the British Army's Mark I tank , the first tank used in combat in September 1916 during the Battle of the Somme . The name "tank" was adopted by the British during the early stages of their development, as a security measure to conceal their purpose (see etymology ). While

16585-404: The heavily armoured hull, improving survivability and reducing the vehicle's profile. Technology is reducing the weight and size of the modern MBT. A British military document from 2001 indicated that the British Army would not procure a replacement for the Challenger 2 because of a lack of conventional warfare threats in the foreseeable future. The obsolescence of the tank has been asserted, but

16740-617: The history of the late 20th and early 21st century suggested that MBTs were still necessary. During the Russian invasion of Ukraine , Western and Russian MBTs saw large-scale combat in large numbers. The Organization for Security and Co-operation in Europe defines a main battle tank as "a self-propelled armoured fighting vehicle, capable of heavy firepower, primarily of a high muzzle velocity direct fire main gun necessary to engage armoured and other targets, with high cross-country mobility, with

16895-584: The increasingly sophisticated tanks, in turn violating the principle of combined arms they had pioneered. Soviet developments following the invasion included upgunning the T-34, development of self-propelled anti-tank guns such as the SU-152 , and deployment of the IS-2 in the closing stages of the war, with the T-34 being the most produced tank of World War II, totalling up to some 65,000 examples by May 1945. Much like

17050-452: The infantry. A related development, motorized infantry , allowed some of the troops to keep up with the tanks and create highly mobile combined arms forces. The defeat of a major military power within weeks shocked the rest of the world, spurring tank and anti-tank weapon development. The North African Campaign also provided an important battleground for tanks, as the flat, desolate terrain with relatively few obstacles or urban environments

17205-427: The insistence of Colonel J.B.E. Estienne , rejected in favour of char d'assaut ("assault vehicle") or simply char ("vehicle"). During World War I, German sources tended to refer to British tanks as tanks and to their own as Kampfwagen . Later, tanks became referred to as " Panzer " (lit. "armour"), a shortened form of the full term " Panzerkampfwagen ", literally "armoured fighting vehicle". In

17360-613: The introduction of laser rangefinders and infrared night vision equipment. Armour technology progressed in an ongoing race against improvements in anti-tank weapons , especially antitank guided missiles like the TOW . Main battle tank A main battle tank ( MBT ), also known as a battle tank or universal tank , is a tank that fills the role of armour-protected direct fire and maneuver in many modern armies. Cold War -era development of more powerful engines, better suspension systems and lighter composite armour allowed for

17515-439: The maximum speed of a tank is about 65 km/h (40 mph) . The extreme weight of vehicles of this type 40–70 t (39–69 long tons; 44–77 short tons) also limits their speed. They are usually equipped with a 1,200–1,500 hp (890–1,120 kW) engine (more than 25,000 cc (1,526 cu in)), with an operational range near 500 km (310 mi). The German Army has prioritized mobility in its Leopard 2 which

17670-598: The modern tank. During the 119 BC Battle of Mobei of the Han–Xiongnu War , the Han general Wei Qing led his army through a fatiguing expeditionary march across the Gobi desert only to find Yizhixie chanyu 's main force waiting to encircle them on the other side. Using armored heavy wagons known as "Wu Gang Wagon" ( Chinese : 武剛車) in ring formations that provided Chinese archers , crossbowmen and infantry protection from

17825-469: The name "tank" had been in use for eight months. The tanks were labelled "With Care to Petrograd," but the belief was encouraged that they were a type of snowplough. The term "tank" is used throughout the English speaking world, but other countries use different terminology. In France, the second country to use tanks in battle, the word tank or tanque was adopted initially, but was then, largely at

17980-403: The near invulnerability to common infantry small arms and good resistance against heavier weapons, although anti-tank weapons used in 2022, some of them man-portable, have demonstrated the ability to destroy older generations of tanks with single shots ), all while maintaining the mobility needed to exploit changing tactical situations. Fully integrating tanks into modern military forces spawned

18135-459: The necessary independent, all-terrain mobility. In a memorandum of 1908, Antarctic explorer Robert Falcon Scott presented his view that man-hauling to the South Pole was impossible and that motor traction was needed. Snow vehicles did not yet exist, however, and so his engineer Reginald Skelton developed the idea of a caterpillar track for snow surfaces. These tracked motors were built by

18290-518: The number of aircraft available. Military planners anticipate that the airlift capability for MBTs will not improve in the future. To date, no helicopter has the capability to lift MBTs. Rail and road are heavily used to move MBTs nearer to the battle, ready to fight in prime condition. Where well maintained roads allow it, wheeled tank transporters can be used. The task of resupply is usually accomplished with large trucks. Main battle tanks have internal and external storage space. Internal space

18445-578: The outbreak of the War no one in a position of responsibility in any army seems to have given much thought to tanks. The direct military impact of the tank can be debated but its effect on the Germans was immense, it caused bewilderment, terror and concern in equal measure. It was also a huge boost to the civilians at home. After facing the Zeppelins, at last Britain had a wonder weapon. Tanks were taken on tours and treated almost like film stars. From late 1914

18600-399: The proposed title totally unsuitable. In our search for a synonymous term, we changed the word "Water Carrier" to "Tank," and became the "Tank Supply" or "T.S." Committee. That is how these weapons came to be called Tanks. He incorrectly added, "and the name has now been adopted by all countries in the world." Lieutenant-Colonel Ernest Swinton, who was secretary to the meeting, says that he

18755-666: The prototype development phase for the vehicle in 1994, with full-scale development to follow in 1997 and production in 2002. The Army struggled to find the needed funding for the vehicle before the end of fiscal year 1991. A third vehicle, added in February 1990, constituted the third, light category of vehicle called the Armored Gun System . The Army planned to buy 300 of these to replace the M551 Sheridan light tank. Select models were designed to be air-dropped from

18910-479: The rest of its armament, can also intercept aircraft and missiles. MBTs can also be protected from radar detection by incorporating stealth technology . The T-14 Armata has a turret designed to be harder to detect with radars and thermal sights. Advanced camouflage, like the Russian Nakidka , will also reduce the radar and thermal signatures of a MBT. Other defensive developments focused on improving

19065-420: The role the British had once called the "universal tank", filling almost all battlefield roles. They were originally designed in the Cold War to combat other MBTs. The modern light tank supplements the MBT in expeditionary roles and situations where all major threats have been neutralized and excess weight in armour and armament would only hinder mobility and cost more money to operate. Reconnaissance by MBTs

19220-580: The second half of World War II led to lightweight infantry-carried anti-tank weapons such as the Panzerfaust , which could destroy some types of tanks. Tanks in the Cold War were designed with these weapons in mind, and led to greatly improved armour types during the 1960s, especially composite armour . Improved engines, transmissions and suspensions allowed tanks of this period to grow larger. Aspects of gun technology changed significantly as well, with advances in shell design and aiming technology. During

19375-453: The smaller barrel could be fitted when the situation did not call for the larger gun. In fiscal year 1990, the Army began work on the in-house phase when it began to develop a "test bed", a modified M1 Abrams chassis that was used to test components for the common heavy chassis, such as the engine, transmission, and suspension, and for the Block III tank's weapon system, including the fire control, new 140 mm gun, and autoloader. This effort

19530-595: The strength of the armour itself; one of the notable advancements coming from the British with the development of Chobham armour in the 1970s. It was first employed on the American M1 Abrams and later the British Challenger 1 . Chobham armour uses a lattice of composite and ceramic materials along with metal alloys to defeat incoming threats, and proved highly effective in the conflicts in Iraq in

19685-503: The successful use of combined arms allowed the Allies to overrun the German forces during the Battle of Normandy . Upgunned versions with the 76 mm gun M1 and the 17-pounder were introduced to improve the M4's firepower, but concerns about protection remained—despite the apparent armour deficiencies, a total of some 42,000 Shermans were built and delivered to the Allied nations using it during

19840-471: The successor to the M109 howitzer , was armed with a 155 mm L/52 gun capable of firing at least 12 rounds a minute. Ammunition storage was increased. AFAS required fewer crew members and incorporated a computer fire control system. The award of the demonstrator contracts was scheduled for the in fiscal year 1991. The demonstrator for the Combat Mobility Vehicle would integrate obstacle-breaching components on

19995-402: The support of infantry , who may accompany the tanks in infantry fighting vehicles , and supported by reconnaissance or ground-attack aircraft . The tank is the 20th-century realization of an ancient concept: that of providing troops with mobile protection and firepower. The internal combustion engine , armour plate , and continuous track were key innovations leading to the invention of

20150-437: The tank a significant advantage over other tanks of the era, paving the way for a new tank classification, the main battle tank, which gradually superseded previous weight and armament classes. A surplus of effective WWII-era designs in other forces, notably the US and the Soviet Union, led to slower introductions of similar designs on their part. By the early 1950s, these designs were clearly no longer competitive, especially in

20305-399: The tank programme were under way when the War ended. The United States Tank Corps used tanks supplied by France and Great Britain during World War I. Production of American-built tanks had just begun when the War came to an end. Italy also manufactured two Fiat 2000s towards the end of the war, too late to see service. Russia independently built and trialed two prototypes early in the War;

20460-444: The tank to overcome rugged terrain and adverse conditions such as mud and ice/snow better than wheeled vehicles, and thus be more flexibly positioned at advantageous locations on the battlefield. These features enable the tank to perform in a variety of intense combat situations, simultaneously both offensively (with direct fire from their powerful main gun) and defensively (as fire support and defilade for friendly troops due to

20615-670: The tank, namely the Shtora and Arena systems. The United States has also adopted similar technologies in the form of the Missile Countermeasure Device and as part of the Tank Urban Survival Kit used on M1 Abrams tanks serving in Iraq. The latest Russian MBT, according to many forum members the T-14 Armata , incorporates an AESA radar as part of its Afghanit APS and in conjunction with

20770-444: The tank. Leonardo's late-15th-century drawings of what some describe as a "tank" show a man-powered, wheeled vehicle surrounded by cannons. However, the human crew would have difficulty moving the heavy vehicle over long distances, while usage of animals was problematic in a space so confined. In the 15th century, Jan Žižka built armoured wagons known as ‘ Wagenburg ’ containing cannons and used them effectively in several battles during

20925-446: The three remaining heavy chassis systems to go through a technology demonstrator phase prior to the start of prototype development. The award of the demonstrator contracts was scheduled for the Combat Mobility Vehicle and for the Advanced Field Artillery System in fiscal year 1991 and for the Future Infantry Fighting Vehicle in fiscal year 1993. The demonstrator for the Combat Mobility Vehicle would integrate obstacle-breaching components on

21080-434: The tracked, two-man Vezdekhod and the huge Lebedenko , but neither went into production. A tracked self-propelled gun was also designed but not produced. Although tank tactics developed rapidly during the war, piecemeal deployments, mechanical problems, and poor mobility limited the military significance of the tank in World War I, and the tank did not fulfil its promise of rendering trench warfare obsolete. Nonetheless, it

21235-409: The turret to the hull could provide time to sleep for one off-shift crewmember located in the rear of the hull. In this scenario, crewmembers would rotate shifts regularly and all would require cross-training on all vehicle job functions. Cargo aircraft are instrumental to the timely deployment of MBTs. The absence of sufficient numbers of strategic airlift assets can limit the rate of MBT deployments to

21390-471: The war years, a total second only to the T-34. Tank hulls were modified to produce flame tanks , mobile rocket artillery , and combat engineering vehicles for tasks including mine-clearing and bridging . Specialized self-propelled guns, most of which could double as tank destroyers , were also both developed by the Germans—with their Sturmgeschütz , Panzerjäger and Jagdpanzer vehicles—and

21545-400: The war, limited-role tank designs tended to be replaced by more general-purpose designs, enabled by improving tank technology. Tank classes became mostly based on weight (and the corresponding transport and logistical needs). This led to new definitions of heavy and light tank classes, with medium tanks covering the balance of those between. The German Panzer IV tank, designed before the war as

21700-514: The wider Somme offensive ) on 15 September 1916. Bert Chaney, a nineteen-year-old signaller with the 7th London Territorial Battalion, reported that "three huge mechanical monsters such as [he] had never seen before" rumbled their way onto the battlefield, "frightening the Jerries out of their wits and making them scuttle like frightened rabbits." When the news of the first use of the tanks emerged, Prime Minister David Lloyd George commented, It

21855-556: The world he was known as the "Instructional Demonstration Unit." "Little Willie's" hull was called in the shop orders a "water carrier for Mesopotamia"; no one knew that the hull was intended to be mounted on a truck. Naturally, the water carrier began to be called a "tank". So the name came to be used by managers and foremen of the shop, until now it has a place in the army vocabulary and will probably be so known in history for all time. (*F.J. Gardiner, F.R.Hist.S.) D'Eyncourt's account differs from Swinton's and Tritton's: ... when

22010-525: The writings of Giffard Le Quesne Martel , but little progress was made beyond development of the basic Cromwell cruiser tank that eventually led to the Centurion . The Centurion, at the time designated "heavy cruiser" and later "medium gun tank" was designed for mobility and firepower at the expense of armour , but more engine power permitted more armour protection, so the Centurion could also operate as an infantry tank , doing so well that development of

22165-478: The years since their first appearance. Tanks in World War I were developed separately and simultaneously by Great Britain and France as a means to break the deadlock of trench warfare on the Western Front . The first British prototype, nicknamed Little Willie , was constructed at William Foster & Co. in Lincoln , England in 1915, with leading roles played by Major Walter Gordon Wilson who designed

22320-541: Was a companion vehicle to the Advanced Field Artillery System. FARV-A allowed crews to supply ammunition under armor ( i.e. without leaving their vehicle). The Army planned to initiate advanced development of the FARV-A in fiscal year 1991. The advanced development phase would demonstrate technologies for ammunition stowage and advanced material handling on a modified Bradley Fighting Vehicle chassis (A Multiple Launch Rocket System as of July 1990). The Army planned to begin

22475-510: Was clear to military thinkers on both sides that tanks in some way could have a significant role in future conflicts. In the interwar period tanks underwent further mechanical development. In terms of tactics, J.F.C. Fuller 's doctrine of spearhead attacks with massed tank formations was the basis for work by Heinz Guderian in Germany, Percy Hobart in Britain, Adna R. Chaffee, Jr. , in

22630-564: Was ideal for conducting mobile armoured warfare. However, this battlefield also showed the importance of logistics, especially in an armoured force, as the principal warring armies, the German Afrika Korps and the British Eighth Army , often outpaced their supply trains in repeated attacks and counter-attacks on each other, resulting in complete stalemate. This situation would not be resolved until 1942, when during

22785-465: Was instructed to find a non-committal word when writing his report of the proceedings. In the evening he discussed it with a fellow officer, Lt-Col Walter Dally Jones , and they chose the word "tank". "That night, in the draft report of the conference, the word 'tank' was employed in its new sense for the first time." Swinton's Notes on the Employment of Tanks , in which he uses the word throughout,

22940-562: Was not their prime originator. I took up an idea, manipulated it slightly, and handed it on." It is, though, possible that one of the British tank pioneers, Ernest Swinton , was subconsciously or otherwise influenced by Wells's tale. The first combinations of the three principal components of the tank appeared in the decade before World War One. In 1903, Captain Léon René Levavasseur of the French artillery proposed mounting

23095-489: Was published in January 1916. In July 1918, Popular Science Monthly reported: Because a fellow of the Royal Historical Society * has unintentionally misled the British public as to the origin of the famous "tanks", Sir William Tritton , who designed and built them, has published the real story of their name ... Since it was obviously inadvisable to herald "Little Willie's" reason for existence to

23250-479: Was recognized as the most effective mounting for the main gun to allow movement in a different direction from firing, enhancing tactical flexibility. During the Cold War , tension between the Warsaw Pact countries and North Atlantic Treaty Organization ( NATO ) countries created an arms race that ensured that tank development proceeded largely as it had during World War II. The essence of tank designs during

23405-511: Was renamed the "Heavy Force Modernization Program". In February 1990, the Army added a light, direct-fire weapon—the Armored Gun System (AGS)—and renamed the program "Armored Systems Modernization." In July 1990, the Senate Armed Services Committee (SASC) passed markup requiring that the Army develop the Advanced Field Artillery System (AFAS) first, rather than the Block III tank as the Army intended. In October,

23560-441: Was scheduled to continue through fiscal year 1993. In December 1990, the Army awarded contracts to Teledyne Continental Motors and to Armored Vehicle Technologies Associated (a joint venture of General Dynamics Land Systems and FMC Corporation ) for the competitive design and development of a common heavy chassis. This effort was scheduled to continue through the first quarter of fiscal year 1994. The contractors could use either

23715-469: Was scheduled to end in 1997, and full-scale tank development was scheduled to begin later that year. Block III tank production was scheduled to start in the fourth quarter of fiscal year 2001, with the first unit equipped in the second quarter of 2003. In June 1991 the House denied funding for the 140 mm gun. In December 1991, Army Secretary Michael P. W. Stone proposed delaying the Block III tank, and

23870-577: Was the M60 tank . Anti-tank weapons rapidly outpaced armour developments. By the 1960s, anti-tank rounds could penetrate a meter of steel so as to make the application of traditional rolled homogeneous armour unpragmatic. The first solution to this problem was the composite armor of Soviet T-64 tank, which included steel-glass-reinforced textolite-steel sandwich in heavily sloped glacis plates, and steel turret with aluminum inserts, which helped to resist both high-explosive anti-tank (HEAT) and APDS shells of

24025-578: Was two largely unsatisfactory types of tank, 400 each of the Schneider and Saint-Chamond , both based on the Holt tractor . The following year, the French pioneered the use of a full 360° rotation turret in a tank for the first time, with the creation of the Renault FT light tank, with the turret containing the tank's main armament. In addition to the traversable turret, another innovative feature of

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