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116-706: The light tank Mk VII (A17) , also known as the Tetrarch , was a British light tank produced by Vickers-Armstrongs in the late 1930s and used during the Second World War . The Tetrarch was the latest in the line of light tanks built by the company for the British Army . It improved upon its predecessor, the Light Tank Mk VIC , by introducing the extra firepower of a 2-pounder gun. The War Office ordered 70 tanks, an order that eventually increased to 220. Production

232-543: A German self-propelled gun and the second by hitting a mine . The division was reinforced by British troops who were advancing from the invasion beaches and it began to push through Normandy, while the squadron continued its reconnaissance duties. At this time, Gale decided to avoid, when possible, engaging the Tetrarchs with German armour, as they proved to be completely outclassed by the German tanks and self-propelled guns, such as

348-528: A Hamilcar glider flight was stationed at RAF Fairford , and a troop of Tetrarchs was kept by the regiment for training exercises with the gliders. However, glider training by the regiment was stopped in 1950 and the Tetrarchs withdrawn from service. There were several variants of the Tetrarch design. The first was the Light Tank Mk VIII , Vickers-Armstrong's proposed successor to the Tetrarch. The Mark VIII

464-643: A Mk II was produced which was mechanically similar but had improvements, such as better quality sights for the machine guns and a larger turret for easier access. A variant on the Mk VIB was produced for service with the British Indian Army , in which the commander's cupola was removed and replaced with a hatch in the turret roof. When the Mk VI was first produced in 1936, the Imperial General Staff considered

580-473: A few minor differences to make production simpler, including a one-piece armoured louvre over the radiator instead of a two-piece louvre, and a plain circular cupola instead of the faceted type. The Mk VIC, which was the last in the MK VI series, had the commander's cupola removed and had wider bogies and three carburettors to improve engine performance; it was also more powerfully armed than the other models, replacing

696-602: A force which sailed for Freetown in West Africa; during this period of the war there were fears that the Spanish government might enter the conflict on the side of Germany, and the force was readied to capture a number of Spanish islands off the coast of Africa if this occurred. These fears proved groundless, and in March 1942, the unit returned to Britain to join the rest of the squadron in training. The next assignment, Operation Ironclad,

812-402: A key moment in the battle but individually, they did not perform well. Several were lost in accidents and those that did see action proved to be inferior in firepower and armour to the armoured vehicles of the German forces. A few days after the beginning of the operation, the tanks were removed from direct engagement with German armour and used only to provide fire support. By August 1944, most of

928-473: A large vehicle to carry it. Gun weight is typically the product of caliber and muzzle velocity . Large caliber guns on light tanks often sacrifice muzzle velocity in interest of saving weight. These guns are effective against close-quarter targets but lack the power and/or accuracy to effectively engage heavier vehicles at a distance. Some light tanks such as the PT-76 are amphibious , typically being propelled in

1044-665: A liability and too vulnerable for use in further combat, and the Tetrarch was considered to be obsolete. This decision may have marked the end for the Tetrarch in active service; several of the tanks destined to be deployed to the Eighth Army in the Middle East for the North African Campaign were left in Britain when their cooling systems were determined to be unable to cope with the intense North African heat. The demise of Tetrarch

1160-590: A light tank themselves but a developed version of the Carden Loyd tankette as the starting point for a series of British light tanks intended for use in imperial policing and expeditionary warfare. As the only tank fit for immediate manufacture, it was a key element in the expansion of the British Army in the period leading up to the outbreak of war. In general, French tanks of the 1930s were well-armored, innovative vehicles that owed little to foreign designs. However,

1276-485: A maximum effective range of about 700 meters. However, this conflict would be instrumental in developing the famous T-34 medium tank. Germany's armored Panzer force was not especially impressive at the start of the war. In the invasions of Poland and France , the German forces were mostly made up of the Panzer I and Panzer II light tanks. The Panzer I was little more than a training vehicle armed only with machine guns;

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1392-415: A memorandum, dated January 1943, by Major General George F. Hopkinson , commander of the 1st Airborne Division , Hopkinson complained that he had been informed that 70 of the tanks were available, whereas only 50 actually remained, with no reserves to replace those lost in combat. This lack of sufficient replacement reserves, combined with a War Office report that some 287 airborne tanks would be required for

1508-532: A number of Valentine and Matilda Mk I Infantry tanks . The Soviet military utilised a greater number of light tanks than the British, and so could use the Tetrarchs. When the tanks arrived in the USSR, however, it was apparent that the design problems with the cooling system were also present in cold conditions; additionally, the cold weather had a deleterious effect on the tank's suspension and tracks. Additional testing of

1624-472: A number of targets with 2-pounder and machine-gun fire, but the line had to be cleared by an infantry assault later in the day. The tanks were ordered to outflank the defences and advance further into the island, and they were soon joined by two other Tetrarchs dispatched from the beaches; the small force continued to advance until it encountered the Vichy French main line of defence. This had been built prior to

1740-458: A pure light tank. In World War I , industrial initiative also led to swift advances. The car industry, already used to vehicle mass production and having much more experience in vehicle layout, designed the first practical light tanks in 1916, a class largely neglected by the British. Renault 's small tank design, the FT , was the first tank to incorporate a top-mounted turret with a full rotation. The FT

1856-622: A result of this, when the Second World War began in September 1939, the vast majority of the tanks available to the British Army were Mk VIs; there were 1,002 Mk VI light tanks, 79 Mk I (A9) and Mk II (A10) cruiser tanks and 67 Matilda Mk I infantry tanks. Of these tanks, only 196 light tanks and 50 infantry tanks were in use by operational units of the army. When the Battle of France began in May 1940,

1972-542: A single Tetrarch tank or two Universal Carriers . The Tetrarch was chosen because it was an obsolete design, and was therefore available to be used by the airborne forces. Beginning in January 1944, training exercises were conducted carrying the Tetrarchs and their crews inside Hamilcar gliders. These exercises were successful; during the training by 'C' Squadron of the Glider Pilot Regiment , which specialised in flying

2088-414: A single Tetrarch were dispatched in support, catching up with the lead elements of the infantry near the town of Anamakia. Here the invasion force encountered the first French defences, consisting of camouflaged trenches and pillboxes dug in along a ridge. The tanks attempted to breach them, but the rocky ground made manoeuvring difficult and they could not close with the pillboxes and trenches; they engaged

2204-406: A three-man crew to operate the tank, was further expanded to give room in its rear for a wireless set. The weight of the tank was increased to 10,800 pounds (4,900 kg), which although heavier than previous models actually improved its handling characteristics, and an 88 horsepower (66 kW) engine was added to the model to increase its maximum speed to 35 miles per hour (56 km/h). It had

2320-568: Is a specialized light tank –amphibious with sufficient firepower to engage other reconnaissance vehicles, but very lightly armored. The US fielded small numbers of the M41 Walker Bulldog with a high velocity 76mm gun, and better armor, but it suffered from range limits, and its weight was too heavy for most air transport of the day. The US M551 Sheridan had similar strengths and weaknesses, but could also be airdropped, either by parachute or LAPES . The French had their AMX-13 light tank, which

2436-447: The 3rd Parachute Brigade and 5th Parachute Brigade (which did not utilise gliders) should land in the first lift to clear the landing zones, allowing the 6th Airlanding Brigade to land in the second lift. The Horsa and Hamilcar gliders of the brigade landed at 21:00 on 6 June in a landing zone cleared of obstructions by the 5th Parachute Brigade. The primary tasks of the brigade were to bring in reinforcements and supplies, and to aid

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2552-606: The Allied invasion of Sicily in 1943; instead they were attached to the new 6th Airborne Division and became part of the 6th Airborne Armoured Reconnaissance Regiment. The division used approximately twenty Tetrarchs during Operation Tonga , the British airborne landings in Normandy in June 1944. The tanks were landed by glider, where their appearance caused the Germans to cancel a counter-attack at

2668-719: The Horstmann coil-spring suspension system, which was found to be durable and reliable, although the fact that the tank was short in relation to its width and that it pitched violently on rough ground made accurate gunnery whilst moving exceptionally difficult. The Mk VI possessed a crew of three consisting of a driver, gunner and commander, who also doubled as the radio operator, between 4 mm (0.16 in) and 14 mm (0.55 in) of armour, which could resist rifle and machine gun bullets, and its armament consisted of one water-cooled .303 inch (7.7 mm) Vickers machine gun and one .50 inch (12.7 mm) Vickers machine gun . Production of

2784-562: The Mark VI . The War Office then took the view that the tank was not acceptable as a light cruiser because the Nuffield A13 design offered better speed and obstacle crossing performance. Despite this, it was decided that it was essential for some Tetrarchs to be produced, and it was suggested that they be brought in at the end of the light tank program. Accordingly, the War Office gave the Tetrarch

2900-580: The Panzer IV and the Sturmgeschütz III . Instead, when the division required armoured support, it summoned it from armoured units outside the division, and the Tetrarchs were used to support infantry patrols and provide fire support. By August, in the division's preparation for the planned breakout from the Normandy bridgehead, the majority of Tetrarchs in 'A' Squadron were replaced with Cromwell fast cruiser tanks ; only three Tetrarchs remained, assigned to

3016-746: The Royal Armoured Corps formed three squadrons for use in overseas amphibious operations, one of which was equipped with Tetrarchs. In May 1942, a small number of Tetrarchs formed part of the British force which participated in Operation Ironclad , the invasion of Madagascar. In June 1942, Tetrarchs were attached to the 1st Airborne Division after it was decided that the design allowed its use as an air-portable light tank to support British airborne forces . The Tetrarchs were transported and landed in specially-designed General Aircraft Hamilcar gliders. A lack of gliders prevented their participation in

3132-513: The .303 and .50 Vickers machine guns with co-axial 15 mm (0.59 in) and 7.92 mm (0.312 in) Besa machine guns . A small number of specialized variations were also built based on the Mk VI chassis . The Tank, Light, AA Mk I was built in the aftermath of the Battle of France and was intended to act as a counter-measure against attacks by German aircraft. It featured a power-operated turret fitted with four 7.92 mm Besa machine guns;

3248-481: The 17th and 13th brigade groups from 5th Infantry Division . The 29th Brigade formed the core of the invasion force due to its training in amphibious operations, and under its command was 'B' Special Service Squadron, created by amalgamating six Valentines from 'B' Squadron and six Tetrarchs from 'C' Squadron into a single unit. The squadron was formed into four troops, one Headquarters troop of three Valentines and one Tetrarch, one of four Valentines, and two formed from

3364-599: The 1st Airborne Division and an unnamed airborne division to be formed in India, led to the Tetrarch's eventual replacement by the US M22 Locust . A number of design faults of the Tetrarch were revealed through its operational use. Its size limited the possible crew to three, a driver in the hull and a gunner and commander in the turret, resulting in too few crew members to operate the Tetrarch effectively. The gunner or commander, in addition to his own duties, had to act as loader for

3480-484: The 1st Airborne Division, and on 19 January 1942 the War Office decided that a light tank unit would be one of the support units attached to the division. This unit, designated the Light Tank Squadron, was to be formed of nineteen light tanks and would operate to the fore of the division, using their tanks' speed to capture objectives and then holding them until relieved by other units. The obvious unit for conversion

3596-603: The 2-pounder, which caused delays in combat. A report on the tank written in January 1941 stated that as the commander had to both fight and control the tank, controlling a troop of Tetrarchs during combat would be almost impossible. Problems were also found with the Littlejohn adaptor fitted to the 2-pounder to increase its range and penetration power; after they had been fitted the adapters could not be removed, and could only fire specially designed armour-piercing rounds, which took time to manufacture. The War Office also considered

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3712-615: The 227th infantry division, the first self-propelled artillery in the Wehrmacht . They carried a 105 or 150 mm field howitzer and were designated G.Pz. Mk. VI (e) . In September 1941 the division deployed to Army Group North in Russia where they provided valuable service during the winter 1941–42 battles. The Mk VIB was also used in the North African campaign against the Italians late in 1940 with

3828-613: The 7th Armoured Division. At this time, the British had 200 light tanks (presumably Mk VIBs) along with 75 cruiser tanks (A9, A10, A13 ) and 45 Matilda IIs . An attack by the 3rd Hussars at Buq Buq on 12 December 1940 resulted in its tanks getting bogged down in salt pans and severely mauled. In ten minutes, 13 tanks were destroyed, ten officers and men killed – including the CO – and 13 wounded. The 7th Armoured Division had 100 tanks left on 3 January 1941; this increased to 120 tanks on 21 January, at which time they were used in flanking far into

3944-683: The Army and airborne forces. One of the major problems was the limited number of these tanks that existed after production ended in 1942, which particularly affected the airborne forces. The transport of 20 of the tanks to the USSR under the Lend-Lease Act depleted the number available for use by airborne forces, as did the loss of several more during Operation Ironclad , the invasion of Madagascar . A Royal Armoured Corps report issued in December 1942 stated that approximately 50 Tetrarchs were available for use. In

4060-485: The British Army, the tank participated in several other important battles. The Mk VIB made up a significant amount of the tanks sent over to the Battle of Greece in 1941, mostly with the 4th Hussars . Ten Mk VIB tanks fought with the 3rd The King's Own Hussars during the Battle of Crete . The same armoured unit had previously embarked three MK VIB tanks for the Norwegian Campaign , but they were lost in transit to

4176-549: The British Army. The prototype of the Light Tank Mk VII (A17), nicknamed 'Purdah', was first developed in 1937 by Vickers-Armstrongs as a private venture, and was intended to be sold either to the British Army or to foreign militaries. It was to be the latest in a series of light tanks produced by the company. The tank was designed to overcome the shortcomings of insufficient armament in earlier light tanks that were fitted only with machine guns. Vickers-Armstrong installed on

4292-418: The British airborne establishment was formed, the War Office was able to accept only 500 volunteers for training as airborne troops. Progress in setting up proper training facilities and acquiring suitable transport aircraft was so slow that the first British airborne operation, Operation Colossus , was conducted by a retrained Commando unit. By 1942, there existed specifically trained airborne units, including

4408-579: The British airborne landings in Normandy . The operation began on the night of 5 June, with the deployment of 6th Airborne Division to eastern Normandy. It was tasked with protecting the eastern flank of the Allied seaborne landings, securing strategically important areas east of Caen , capturing several important bridges over the Caen Canal and River Dives , and destroying a coastal artillery battery. Insufficient transport aircraft were available to land all three of

4524-567: The British firm of Vickers-Armstrong started promoting another design by John Carden and Vivien Loyd as the " six-ton tank ". Although rejected by the British Army, it was bought by a large number of nations in small numbers. It formed the basis of the Soviet T-26 (around 10,000 built) and the Polish 7TP tank and influenced the Italian Fiat M11/39 . The British Army did not use the design as

4640-472: The British government began its rearmament process in 1937, the Mk VI was the only tank with which the War Office was ready to proceed with manufacturing; the development of a medium tank for the Army had hit severe problems after the cancellation of the proposed "Sixteen Tonner" medium tank in 1932 due to the costs involved, and cheaper models only existed as prototypes with a number of mechanical problems. As

4756-477: The CS variation and the rest were armed with 2-pounders fitted with Littlejohn adaptors. On 24 May 1944, after participating in a further series of exercises and manoeuvres, 'A' Squadron moved from their training area to a transit camp at Tarrant Rushton airfield , while the rest of the regiment moved to RAF Brize Norton airfield the next day; from these two airfields, the regiment would be transported from to participate in

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4872-595: The Cold War era was the Swedish Ikv 91 (classified as an assault gun by Sweden). It had a low-pressure 90mm gun, strong armor against 20mm grenades, and it was fully amphibious. Light tanks, such as the PT-76 , continue to play a small role in tank warfare , although many are losing favor to cheaper, faster, and lighter armored cars . The light tank still fills an important niche in many armies, especially for nations with airborne divisions, Marine Infantry, or those without

4988-556: The First World War and included camouflaged pillboxes, machine-gun nests and dug-in 75 mm artillery pieces ; the latter, although not specifically designed for an anti-tank role, could penetrate the armour of both the Tetrarchs and the Valentines. The two Valentines advanced first but were knocked out by artillery fire, and two Tetrarchs that were moving behind them suffered the same fate; the third Tetrarch retreated in order to report on

5104-450: The French resistance, machine gunning a motorcycle combination and a truck it encountered on the way back. The commander of the Tetrarch made his report, and was then ordered to take command of four Valentines and two Tetrarchs which had recently arrived and once again attempt to breach the French defences. The tanks followed the road leading to the defensive line and then attempted to out-flank

5220-483: The German invasion of the USSR, Operation Barbarossa began, and the USSR became an ally of Britain. The Lend-Lease program, begun in March 1941 by the United States of America to supply defensive materials to Britain and China, was therefore extended to the USSR. As part of the program, the British government began supplying war materials to the USSR, which in early 1942, included a shipment of 20 Tetrarchs, as well as

5336-770: The Hamilcars, over 2,800 lifts were made with an average of 50 lifts per crew. Only three incidents resulted in fatalities or injuries, with seven pilots killed during the training. When the Tetrarch was re-designated as an airborne tank, several changes were made to its design. A number of tanks had their 2-pounder guns replaced with a 76.2-millimetre (3.00 in) infantry support howitzer; these tanks were then designated as Tetrarch 1 CS (Close Support). Additionally, Littlejohn adaptors were added to those Tetrarchs which still possessed their 2-pounders to increase their muzzle velocity and armour penetration. The Tetrarch experienced several setbacks throughout its development and deployment with

5452-553: The Headquarters troop of 'A' Squadron. Operation Tonga was the last that Tetrarchs saw of active combat. During the first week of October 1944, the 6th Airborne Armoured Reconnaissance Regiment underwent an extensive reorganization, in which it was completely restructured, and all the remaining Tetrarchs were retired. They were replaced with the M22 Locust, a purpose-built airborne light tank of American design; eight Locusts were used by

5568-604: The M2 with better armor. The new medium tank just entering production in 1940 was the M2A1. This was a poor design with thin armor and a high silhouette. The M3 Stuart saw use in the North African Campaign but was relegated to reconnaissance as soon as US-built medium tanks became available. Further light tank development in the war led to the improved M5 Stuart and then included the M24 Chaffee . Light tanks were issued to tank battalions (one of

5684-452: The Mk VI began in 1936 and ended in 1940 with 1,682 Mark VI tanks having been built. Many of those produced were actually variants designed to solve problems found with the original design. The Mk VIA had a return roller removed from the top of the leading bogey and attached to the hull sides instead, and also possessed a faceted cupola. The Mk VIB was mechanically identical to the Mk VIA but with

5800-505: The Mk VII and reduce its power wastage. The suspension system was also a new design that relied on struts with pockets of air for springing and cushions of oil for damping, and each of the wheels was independently sprung. The War Office examined the design and put the prototype through a series of trials during May and June 1938; the model was tested as a possible "light cruiser" since War Office light tank needs were already met by its predecessor,

5916-522: The Mk VIIs a 40 mm (1.6 in) QF 2-pounder main gun paired with a 7.92 mm (0.312 in) Besa machine gun , and mounted the two guns in a two-man turret . The tank had a maximum of 14 millimetres (0.55 in) of armour. The prototype weighed approximately 16,800 lb (7,600 kg) and was powered by a 165-horsepower (123 kW) Meadows engine. Suspension was on eight road wheels, four per side, with no separate driver or idler wheels and it

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6032-501: The Panzer II with a 20 mm cannon. The Panzer division also included some Czech designed light tanks—the Panzer 35(t) and the Panzer 38(t) . American light tank development started with the M2 light tank series. These light tanks were mechanically very reliable, with good mobility. However, they had a high silhouette, and only a few saw combat. The M3 Stuart series was an improvement of

6148-626: The Tetrarch was fitted to the Mark VIII, although the increased weight meant that its maximum speed decreased to 30 miles per hour (48 km/h); its armament also remained the same as that of the Tetrarch. The War Office authorised the construction of three prototype models in April 1941. The new design was considered a success, and the Tank Board of the War Office ordered 1,000 to be constructed in September. However, problems were encountered with further tests of

6264-475: The Tetrarch's cooling system faulty, making the tank unsuitable for service in hotter climates, such as the Middle East and North Africa. The first Tetrarchs were delivered to the Army in November 1940, and were initially deployed with the 1st Armoured Division (which was being refitted after losing the majority of its previous tanks during the Battle of France) and the newly formed 6th Armoured Division . However,

6380-506: The Tetrarch's design, Soviet authorities believed it to be comparable to the T-70 light tank in use at the time, and decided that it was suitable to be used in combat. A number of Tetrarchs were sent to Tank Training Schools which were subsequently sent into battle, and in September 1943 two were assigned to the 132nd Separated Tank Battalion, which was attached to the 5th Guards Tank Brigade; both tanks were destroyed in combat, one on 30 September and

6496-506: The Tetrarchs in action were replaced with Cromwell tanks and the remainder were replaced by the M22 Locust in December 1944. Tetrarchs did not see any further combat and were deemed obsolete by 1946; the last was retired in 1950. There were several variations on the Tetrarch design, including the Alecto self-propelled gun and the Light Tank Mk VIII but none of these were used operationally by

6612-411: The Tetrarchs they carried; a third Hamilcar hit another Tetrarch as it was being unloaded and flipped the tank upside down, rendering it unusable, although the crew escaped without injury. The surviving tanks were then rendered temporarily immobile when parachute rigging lines became tangled in their suspensions, forcing their crews to cut the lines away with welding torches. The squadron retrieved all of

6728-481: The Tetrarchs was conducted by the Soviet military and the design was admired for its controllability, manoeuvrability, and speed, as well its ability to run on low-quality fuel, unlike contemporary Soviet designs. The thinness of the Tetrarch's armour was found to be a problem and one which could not be solved, as the weight of extra armour plating caused an unacceptable reduction in the tank's speed. Despite these drawbacks in

6844-513: The armor in contemporary light tanks is modular, sometimes up to three configurations. The flat hull necessary for amphibious light tanks to plane across the surface of the water is not nearly as blast-resistant as the V-shaped hull. It has been suggested that underbelly armor appliqué could be applied after the light tanks come ashore and before they encounter explosive devices. A gun capable of defeating modern tanks at reasonable ranges requires

6960-466: The division's 3rd Armoured Brigade, possessed by this time 21 Mark VI light tanks. The British Army lost 331 Mark VI light tanks in the Battle of France of 1940. Several of these vehicles were captured by the Wehrmacht , redesignated as Leichter Panzerkampfwagen Mk. IV 734(e) and used for training purposes until the fall of 1942. During 1941 several of these captured vehicles were converted to create self-propelled artillery and supporting vehicles for

7076-433: The division's brigades simultaneously; one would have to be landed in a second lift later in the day. Major General Richard Gale had initially intended for the 6th Airlanding Brigade , to which the 6th Airborne Armoured Reconnaissance Regiment was attached, to be landed first; however, aerial photography revealed that anti-glider poles had been erected in the landing zone selected for the brigade. Therefore, Gale decided that

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7192-550: The event they were not used. 'C' Squadron suffered heavy casualties during the invasion; only one Valentine and three Tetrarchs out of twelve tanks were functional by 7 May, and the squadron had suffered seven killed and six wounded. It remained in Madagascar until early 1943, when it was shipped to India and took part in the Burma Campaign as part of 29th Brigade. Because of a lack of equipment training facilities in mid-1940, when

7308-539: The fact that light tank platoons were not expected to function as a reconnaissance unit, they could be used for reconnaissance purposes. In this role, they were expected to remain behind the main reconnaissance force as the support element and augment the firepower whenever enemy contact was made. The British withdrew their light tank designs from their armored divisions early in the war, but used some later designs for minor amphibious operations and airborne operations. In general they used armored cars for reconnaissance and

7424-531: The faults discovered with the Tetrarch cooling system precluded them from being integrated into units that were sent to the Middle East to participate in the North African Campaign. Shortly after, all light tanks were discarded from the establishments of British armoured divisions as not suitable for further service. The Tetrarchs remained in Britain, and would probably have been used as training vehicles before being retired from service, but on 22 June 1941

7540-459: The few better examples, but the US Army acquired only three Christies and did not pursue the idea any further. Budget limitations and the low priority given to the army meant that there were few resources for building tanks. The US Army instead developed and tested tank components such as suspensions, tracks, and transmissions. This paid off when production had to be initiated on the outbreak of war. At

7656-449: The few tank variants to survive the development of the main battle tank —in which technological advancements have rendered all previous weight variants obsolete—and has seen use in a variety of roles including the support of light airborne or amphibious forces and reconnaissance. Modified IFVs are assuming these roles in many militaries due to their immediate availability, and as a cheaper versatile alternative to developing and fielding

7772-778: The four companies was a light tank company), light tank battalions and cavalry reconnaissance squadrons. The original role of the light tank in these formations was similar to medium tanks and they were expected to engage enemy armor with AP rounds and enemy positions with HE rounds. As a result, tank gunnery training for light and medium tankers was common. US Army Field Manuals written before 1944 clearly show that light tanks were to be part of an armored assault on enemy positions, and examples of fire on enemy armor were in these manuals. When pursuing an enemy, Light Tank Battalions were expected to move parallel with enemy columns and, together with accompanying infantry and engineer units, seize "critical terrain that will block hostile retreat". Despite

7888-474: The hatch. Some light tanks, such as the M551 Sheridan , ZTQ-15 and 2S25 Sprut-SD armored reconnaissance vehicle, could be rigged for low- velocity airdrops from transport aircraft . With this method the tank is pulled out of the aircraft by brake chutes and skids to a stop. The crew does not ride in the tank during extraction, but parachutes from another plane. Upon landing, they go to their tank, release

8004-442: The infantry brigades and their armoured support was to take control of Antsirane and a nearby town, but although the infantry landed successfully, 'B' Squadron had more trouble; the area of beach designated for its landing craft was blocked for several hours after a Tetrarch came loose from a landing craft and became stuck in the sand. The infantry brigades advanced toward Antsirane without the squadron, but eventually two Valentines and

8120-453: The invasion beaches. Two Tetrarchs have been preserved and both of these are on display. The first is preserved at The Tank Museum in Bovington in England and the other is located at the Kubinka Tank Museum in Russia . The Bovington tank is fitted with an Ordnance QF 3-inch howitzer . Background: British armoured fighting vehicle production during World War II , Tanks in the British Army Light tank The fast light tank

8236-404: The landing beaches, the defences possessed by the port, and the Vichy French defending forces was limited and vague, although it was believed that the defenders had no weapons capable of penetrating the armour of a Valentine tank. The landings began at 04:30 on 5 May, with 5 Commando landing at Courrier Bay and the three infantry brigades and 'B' Squadron landing at Ambararata Bay. The objective of

8352-542: The last of the light tank designs, the light tank Mk VIII "Harry Hopkins", was produced only in small numbers. The Japanese made extensive use of light tanks that were much better suited to jungle warfare than larger designs, such as the Type 95 Ha-Go light tank. Light tanks continued to be built, but for very limited roles such as amphibious reconnaissance, support of airborne units , and in rapid-intervention forces that were not expected to face enemy tanks. The Soviet PT-76

8468-507: The late 1930s, which saw service during the Second World War . The Tank, Light, Mk VI was the sixth in the line of light tanks built by Vickers-Armstrongs for the British Army during the interwar period . The company had achieved a degree of standardization with their previous five models, and the Mark VI was identical in all but a few respects. The turret, which had been expanded in the Mk V to allow

8584-519: The light tanks lacked firepower and almost all French tanks were handicapped by their one-man turrets, even the larger tanks such as the Char B1 , which overworked the commander who, besides directing the vehicle, or even a troop, had to load and aim the turret gun. The lack of radios with the light tanks was not seen as a major drawback, since French doctrine called for slow-paced, deliberate maneuvers in close conformance to plans. The role of small unit leaders

8700-444: The line by advancing from the right-hand side, using several hills as cover; the artillery pieces were able to turn and face the assault, however, and one Valentine and one Tetrarch were hit and destroyed. The remaining tanks exchanged several volleys of fire with the artillery pieces before retreating back to their original positions. The French line was eventually broken by 29th Brigade, aided by an amphibious assault by Royal Marines ;

8816-576: The lines, and drive it away. Background: History of the tank , Tank classification , Tanks in World War I Background: History of the tank , Tank classification , interwar period Background: History of the tank , Tank classification , Tanks in the Cold War Background: History of the tank , Tank classification Light Tank Mk VI The Tank, Light, Mk VI was a British light tank , produced by Vickers-Armstrongs in

8932-608: The majority of the tanks possessed by the British Expeditionary Force were Mark VI variants; the seven Royal Armoured Corps divisional cavalry regiments, the principal armoured formations of the BEF, were each equipped with 28 Mk VIs. The 1st Armoured Division , elements of which landed in France in April, was equipped with 257 tanks, of which a large number were Mk VIB and Mk VICs. The 3rd Royal Tank Regiment, which formed part of

9048-462: The most advanced in the 1930s, extremely fast and mounting high velocity 45 mm cannons. Their only drawback were their petrol engines which caught fire often and easily during the Nomonhan fighting, which lasted from about May through September 1939. The Japanese Type 95 Ha-Go light tank was equipped with a diesel engine , and although mounting a 37 mm cannon, it was a low velocity gun with

9164-453: The official General Staff specification number A17, and, in November 1938, accepted it for limited production after requesting a few minor changes which included the fitting of an external fuel tank to increase the tank's range. The number to be produced was subject to fluctuation as the War Office vacillated in their demand; in July 1938, it requested that 70 of the tanks be produced, then increased

9280-593: The other on 2 October, the latter a casualty of artillery fire. Several were also used for propaganda purposes, appearing in photographs of Soviet troops who were fighting in the Caucasus region. In mid-1941, the Royal Armoured Corps in Britain created three tank squadrons for special overseas operations, known as 'A', 'B' and 'C' Special Service Squadrons. Both 'A' and 'B' Squadrons were equipped with Valentine Infantry tanks and Mark VIc light tanks , but 'C' Squadron

9396-821: The preferred choice for infantry support in Equatorial nations. Post–Cold War light tanks include the Stingray , ZTQ-15 , M8 Armored Gun System and Kaplan MT / Harimau . Light tanks based on infantry fighting vehicles chassis include the CV90 105T, 2S25 Sprut-SD , Tanque Argentino Mediano , ASCOD LT 105 , and Sabrah . The modern light tank supplements the main battle tank in expeditionary roles and situations where all major threats have been neutralized and excessive weight in armor and armament would only hinder mobility and cost more money to operate. They have also been used for reconnaissance and, in some cases, infantry support. Typically,

9512-401: The production of only a small number of Mk VIIs; estimates place the final total produced to be between 100 and 177. The name 'Tetrarch' was given to the Mk VII, on 22 September 1941, on the orders of the War Office. The last of the tanks were built in the first quarter of 1942 and delivered at the end of the year. The War Office and the Army were concluding, at this point, that light tanks were

9628-511: The prototypes, and a report issued in December 1942 stated that production of the Mark VIII had been delayed due to developmental problems. These problems continued to persist into 1943, when the War Office decided against using the tank in active service; approximately 100 Mark VIIIs were produced by 1945, when production ended. A second variant on the Tetrarch design was the Tetrarch Duplex Drive ("Tetrarch DD"). The Duplex Drive system

9744-433: The rear and gathering up scattered Italian troops, sometimes joining or leaving the main attacks to the cruiser and Matilda II tanks. During an engagement at Mechili on 24 January, six Mk VIs were destroyed by newly arrived superior Italian Fiat M13/40s for no loss, forcing a retreat until cruiser tanks arrived. The 2nd RTR continued to battle the Italians with light tanks as late as 6 February 1941. Being widely used by

9860-461: The regiment in March 1945 during Operation Varsity , the airborne operation to cross the river Rhine . A report issued by the Director (Air) of the War Office in January 1946 confirmed that the Tetrarch design was considered obsolete, and any light tanks used in post-war airborne formations would be entirely new in design. A small number of Tetrarchs remained in service with the 3rd Hussars until 1949;

9976-496: The remaining Tetrarchs and advanced to the south of the landing zone to link up with the rest of the regiment; there, they received orders to support the 8th Parachute Battalion in the Bois de Bavent area and conduct reconnaissance duties. After linking with the battalion, the squadron began reconnoitring, and engaged German infantry and armour they encountered. By the end of 7 June, two Tetrarchs had been lost to enemy action, one destroyed by

10092-409: The remaining five Tetrarchs. The invasion force assembled off the west coast of the northern tip of Madagascar on 4 May, near Antsirane and the bay of Diego Suarez. The invasion plan called for an amphibious assault landing on four beaches on the west side of the tip, which would allow the British forces to advance approximately 20 miles (32 km) and approach Antsirane from the rear. Information about

10208-556: The remaining tanks of 'B' Squadron, two Valentines and three Tetrarchs, remained in defensive positions until the afternoon of 6 May, coming under sporadic artillery fire which disabled another Valentine. The squadron played no further part in the battle, as the Vichy French authorities negotiated a formal surrender the following day, although French troops would continue to engage the British occupying force in guerrilla warfare until late November. 'B' and 'C' Squadrons were embarked onto SS Ocean Viking for use during these operations , but in

10324-462: The request to 120 after a three-day conference in November. Production was to begin in July 1940, but meanwhile the War Office temporarily returned to its original order of 70 before increasing the number to 100. The number further increased to 220 after Metropolitan Cammell Carriage & Wagon , a company part owned by Vickers-Armstrong that would be producing the tanks, indicated it had already ordered armour plating for that many tanks. Production of

10440-468: The resources and funding for main battle tanks . They have important advantages over heavier tanks in Southeast Asia and other nations in the Equatorial region. Their compact dimensions and short-to-nonexistent barrel overhang lets them maneuver through thick rain forests, and their weight reduces the risk of getting stuck in mud, and simplifies recovery of stuck or damaged tanks. This makes the light tank

10556-461: The rest of the conflict. The squadron continued to train as an air-portable unit, and participated in a number of exercises to prepare for its new duties, including reconnaissance of enemy positions and counter-attacking enemy infantry and armour. On 13 December 1943, the War Office decided to expand the squadron into a regiment equipped with a combination of light tanks and conventional reconnaissance vehicles such as scout cars, and on 1 April 1944, it

10672-522: The resulting high casualties led the War Office to re-evaluate the suitability of the light tank design. The pre-war role of the light tank, that of reconnaissance, meanwhile had been found to be better suited to scout cars that used smaller crews and had better road abilities. Further delays were caused by the bombing raids of the Luftwaffe during May 1941 against the factories where the tanks were assembled. The cumulative effect of these delays resulted in

10788-422: The side armour to 17 millimetres (0.67 in), and the turret and hull given more sloped surfaces to help deflect shells fired at the tank. The dimensions of the Tetrarch were also changed; the Mark VIII was longer by 6 inches (0.15 m), wider by 1 foot 3 inches (0.38 m) and heavier. The new tank was no longer air-portable, as it was too heavy to be carried by a Hamilcar. The 12-cylinder engine of

10904-432: The squadron's strength of twenty tanks was severely depleted by the time it landed in Normandy. It lost one tank before the formation landed when the Tetrarch broke loose of its shackles and crashed through the nose of the glider that was carrying it, causing both to fall into the sea mid-flight. The squadron's strength was further weakened when two gliders collided with each other in the landing zone, destroying themselves and

11020-540: The start of World War II, the majority of all of the great powers' tank forces consisted of light designs. The most common were the British Light Tank Mk VI , French Renault R35 , German Panzer I , Italian L3/35 (classified as a light tank by the Royal Italian Army , a tankette by others), Japanese Type 95 Ha-Go light tank , Soviet T-26 , and American M2 light tank . The Soviet BT tanks were

11136-527: The tank to be superior to any light tank produced by other nations, and well suited to the dual roles of reconnaissance and colonial warfare. Like many of its predecessors, the Mark VI was used by the British Army to perform imperial policing duties in British India and other colonies in the British Empire , a role for which it and the other Vickers-Armstrongs light tanks were found to be well suited. When

11252-404: The tank was delayed by a number of factors. The War Office put their order on hold in a post- Battle of France decision to focus military production on infantry and cruiser tanks, due to the poor performance of British light tanks during that battle. Due to the shortage of more suitable tanks, light tanks that were not designed for use against German armour, were nevertheless deployed against them;

11368-592: The tank's engine. The screen could be collapsed by using a small explosive charge once the tank reached land. The system was fitted during June 1941, as the Tetrarch was the lightest light tank available at the time; the converted tank was successfully tested on a number of lakes and reservoirs, allowing the Duplex Drive system to be tested on heavier tanks, such as the Valentine. The system would be used during Operation Overlord , when M4 Sherman medium tanks would land on

11484-401: The two parachute brigades in consolidating the area held by the division; the 6th Airborne Armoured Reconnaissance Squadron was to aid in the latter task, acting as a reconnaissance force to scout out German positions and impede the movement of German forces attempting to counter-attack. The Tetrarchs of 'A' Squadron were to play an integral part in this reconnaissance role due to their speed, but

11600-402: The war, over 3,700 (mostly in 1918), and was more numerous than all British and German tanks combined. The Carden Loyd tankette and its derivatives were adopted by several nations as small tracked vehicles carrying a machine gun for armament. At a time of limited military budgets, tankettes were relatively cheap and functioned as reconnaissance vehicles and mobile machine gun posts. In 1928,

11716-417: The water by hydrojets or by their tracks. Most amphibious light tanks weigh little and often utilize aluminum armor. Some light tanks require no modifications for river crossings. Crews simply raise the easily accessible cloth sides around the hull, cover the hatches, turn on the bilge pump and shift the transmission to water operations. Often, a fold down trim vane is erected to stop water from flooding into

11832-411: Was 'C' Special Services Squadron, as it was trained to act as an independent tank unit and, more importantly, was the only unit that was still using Tetrarchs; it had been re-designated as an airborne tank by the War Office. 'C' Squadron was officially transferred to the 1st Airborne Division on 24 June 1942, bringing with it seven Tetrarchs among its other vehicles. The unit immediately began training, but

11948-569: Was a major feature of the pre– World War II army buildup, where it was expected they would be used to exploit breakthroughs in enemy lines created by slower, heavier tanks, with the goal of disrupting communications and supply lines. Numerous small tank designs and " tankettes " were developed during this period and known under a variety of names, including the " combat car ". Early light tank designs were generally better armed and armored than armored cars , but used tracks in order to provide better cross-country mobility. The light tank has been one of

12064-510: Was also known as the Harry Hopkins , named after President Roosevelt's chief diplomatic advisor, and was given the General Staff design number A25 by the War Office. The Mark VIII was intended to improve upon the design of the Tetrarch in a number of areas. It had thicker armour than the Tetrarch, with the front hull and turret armour increased to a thickness of 38 millimetres (1.5 in) and

12180-440: Was capable of a 40 miles per hour (64 km/h) top speed. The Mk VII design relied on an unusual steering method and a mechanical system incorporated into earlier Vickers models. The front wheels could be steered to allow for gentle turns by bending the tracks. For sharper turns, the system returned to the conventional method of braking one track to turn the tank; the dual system of turning was designed to lessen mechanical strain on

12296-446: Was delayed by several factors and only 100 to 177 of the tanks were produced. The design flaws of the tank, combined with the decision by the War Office not to use light tanks in British armoured divisions, ruled out the use of Tetrarchs in the North African Campaign . The majority of the tanks remained in Britain, although twenty were sent to the USSR as part of Lend-Lease . In early 1941,

12412-515: Was designed for its capability to be quickly air-dropped for use with paratroopers and also able to support lightly armed infantry and perform force-reconnaissance effectively. The British FV101 Scorpion , the fire support variant of the Combat Vehicle Reconnaissance (Tracked) series of vehicles that replaced armored cars in British service, has been described as a light tank and was sold to many smaller nations. Another light tank in

12528-650: Was equipped with twelve Tetrarchs transferred from the 2nd Armoured Brigade, 1st Armoured Division. On 31 July 1941, 'C' Squadron was officially activated and immediately received orders to prepare for overseas service alongside 'A' and 'B' Squadrons in an unspecified tropical climate. All three squadrons were transported to Inverary in Scotland for intensive training that focused on embarkation and disembarkation from ships and landing craft to prepare them for action in potential amphibious operations. In early September, elements of 'C' Squadron, including six Tetrarchs, formed part of

12644-424: Was in many respects the first truly modern tank having a layout that has been followed by almost all designs ever since: driver at the front; main armament in a fully rotating turret on top; engine at the rear. Previous models had been "box tanks", with a single crowded space combining the role of engine room, fighting compartment, ammunition stock and driver's cabin. The FT had the largest production run of any tank of

12760-417: Was invented by Nicholas Straussler , and was designed to allow a tank to 'swim' through water and participate in amphibious operations. The system functioned by erecting a large waterproof canvas screen around the tank above its tracks, which was supported by thirty-six inflatable tubes and steel struts; this gave the tank sufficient buoyancy to float, and was then propelled along by a small propeller powered by

12876-456: Was not attached to the 1st Airborne Division for long; during mid-1943, the division was transported to the Middle East so it could participate in the Allied invasion of Sicily . 'C' Squadron remained in Britain, as not enough Hamilcar gliders had been built by the time the division departed to transport its Tetrarchs; the squadron was transferred to the 6th Airborne Division, which had been raised in April 1943, and 'C' Squadron remained with it for

12992-500: Was prevented by a decision made by the War Office in mid-1941, as it was considering the equipment to be used by Britain's fledgling airborne forces , formed in June 1940 under the orders of the Prime Minister , Winston Churchill . When selecting the equipment for the airborne forces, officials at the War Office concluded that gliders would be an integral component; gliders would transport troops and heavy equipment, which, by 1941,

13108-564: Was re-designated as the 6th Airborne Armoured Reconnaissance Regiment. The regiment consisted of a Headquarters Squadron, a Light Tank Squadron and a Reconnaissance Squadron; two Tetrarchs, the Mark 1 CS variation, were attached to the Headquarters Squadron, but the Light Tank Squadron, also known as 'A' Squadron, received the majority of the Tetrarchs. 'A' Squadron had approximately nineteen Tetrarchs split between six troops, two of which were of

13224-601: Was the invasion of Madagascar, the third largest island in the world and then under Vichy French control. The Prime Minister and the Combined Chiefs of Staff decided that Madagascar should be occupied as rapidly as possible to deny the port of Antsirane to Japanese naval forces, which had recently advanced into the Indian Ocean . Operation Ironclad was under the command of Major General Robert G. Sturges and consisted of No. 5 Commando , 29th Independent Brigade Group , and

13340-454: Was to execute plans, not to take the initiative in combat. In 1939, a belated effort was made to improve flexibility and increase the number of radios. Throughout the interwar period the US produced only a few hundred tanks. From the end of World War I to 1935, only 15 tanks were produced. Most were derivatives or foreign designs or very poor quality private designs. The Christie designs were among

13456-545: Was to include artillery and some form of tank. Plans to transport a tank went through a number of revisions, but, by May 1941, the feasibility of a 5.5 metric tons (5.4 long tons) tank to be carried for 350 miles (560 km) in a glider was accepted, although the aircraft would have to be specifically designed for the task. In a conference held on 16 January 1941, it was decided that the General Aircraft Hamilcar , currently under development, would be used to transport

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