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T-54/T-55

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T-54/55
A T-55 tank on display at theImperial War Museum
Type
(NATO designation)
Place of originSoviet Union
Service history
In service1948–present
Used bySeeOperators
WarsSeeService History
Production history
Designer
Designed1945–1958
Manufacturer
  • KhPZ,UVZ(Soviet Union)
  • Bumar-Łabędy (Poland)
  • ZTS Martin (Czechoslovakia)
Unit costUS$200,000 (export price toEgypt,1956–1972)[1]
Produced
  • 1946–1981 (Soviet Union)
  • 1956–1979 (Poland)
  • 1957–1983 (Czechoslovakia)
No.built96,500–100,000+ est., including:
  • More than 35,000 T-54 and More than 27,500 T-55 (by Soviet Union)
  • 13,000 Type-59/69/79 (by China)
  • 11,000 T-54/55 (by Czechoslovakia)
  • 10,000 T-54/55 (by Poland)
VariantsSeeOperators and variantssection below
Specifications (T-55)
Mass36 metric tons (35.4 long tons; 39.7 short tons)
Length9.00 m (29 ft 6 in) with gun forward
Width3.37 m (11 ft 1 in)
Height2.40 m (7 ft 10 in)
Crew4

Armour
  • 205 mm turret front
  • 130 mm turret sides
  • 60 mm turret rear
  • 30 mm turret roof
  • 120 mm hull front at 60° (100 mm after 1949)[2]
  • 79 mm hull upper sides
  • 20 mm hull lower sides
  • 60 mm at 0° hull rear
  • 20 mm hull bottom
  • 33–16 mm hull roof
Main
armament
D-10T100 mm rifled gun (43 rounds)
Secondary
armament
7.62 mmSGMTcoaxial machine gun, (12.7 mmDShKheavy machine gun)
EngineModelV-55(V-54)V-12 water-cooled. 38.88 litre diesel
500 horsepower (373 kW) up to 800 horsepower (600 kW) (late versions)
Power/weight14.6 horsepower per metric ton (10.9 kW/t)
TransmissionMechanical (synchromesh), 5 forward, 1 reverse gears
SuspensionTorsion bar
Ground clearance0.425 m (16.7 in)
Fuel capacity580 L internal, 320 L external (less on early T54), 400 L jettisonable rear drums
Operational
range
325 kilometres (202 mi), 610 kilometres (380 mi) with extra tanks (on unpaved roads)
Maximum speed51 kilometres per hour (32 mph)

TheT-54andT-55tanks are a series ofSovietmain battle tanksintroduced in the years following theSecond World War.The first T-54 prototype was completed atNizhny Tagilby the end of 1945.[3]From the late 1950s, the T-54 eventually became the main tank for armoured units of theSoviet Army,armies of theWarsaw Pactcountries, and many others. T-54s and T-55s have been involved in many of the world's armed conflicts since their introduction in the second half of the 20th century.

The T-54/55 series is the most-produced tank in history. Estimated production numbers for the series range from 96,500 to 100,000. They were replaced by theT-62,T-64,T-72,T-80andT-90tanks in the Soviet andRussian armies,but remain in use by up to 50 other armies worldwide, some having received sophisticated retrofitting. The Chinese version of the T-54A is theType 59.

During theCold War,Soviet tanks never directly faced theirNATOadversaries in combat inEurope.However, the T-54/55's first appearance in theWestaround the period of the 1950s (then the beginning of the Cold War) spurred the United Kingdom to develop a new tank gun, theRoyal Ordnance L7,and theUnited Statesto develop theM60 tank.[4]

Development history[edit]

Predecessors: T-34 and T-44[edit]

The SovietT-34medium tank of the 1940s has been described as having the best balance of firepower (F-34 tank gun76.2 mm gun), protection and mobility for its cost of any tank of its time in the world.[5]Its development never stopped throughout the Second World War and it continued to perform well; however, the designers could not incorporate the latest technologies or major developments as vital tank production could not be interrupted during wartime.

In 1943, theMorozov Design Bureauresurrected the pre-war T-34M development project and created theT-44 tank.Thanks to a space-efficienttorsion-barsuspension, a novel transverse engine mount, and the removal of the hull machine-gunner's crew position, the T-44 had cross country performance at least as good as the T-34, but with substantially superiorarmourand a much more powerful 85 mm gun.

By the time the T-44 was ready for production, the T-34 had also been modified to fit the same gun. Although the T-44 was superior in most other ways, by this time T-34 production was in full swing and the massive numbers of T-34s being built offset any advantage to smaller numbers of a superior design. The T-44 was produced in only small numbers, around 2,000 being completed during the war. Instead, the designers continued to use the design as the basis for further improved guns, experimenting with a 122 mm design, but later deciding a 100 mm gun was a better alternative.

Prototypes[edit]

Efforts to fit the 100 mm gun to the T-44 demonstrated that small changes to the design would greatly improve the combination. The main issue was a larger turret ring, which suggested slightly enlarging the hull. A prototype of the new design, about 40 centimetres (16 in) longer and only 10 cm wider, was completed in 1945. This model looked almost identical to the original T-44, albeit with a much larger gun.

Testing revealed several drawbacks that needed correcting and many alterations that had to be made to the vehicle's design. It was decided to begin serial production of the new vehicle and the vehicle officially entered service in April 1946. It would go into production inNizhny Tagilin 1947 andKharkivin 1948.[6]

T-54[edit]

The original T-54-1. It has a turret reminiscent of theT-34-85s,with prominent, undercutshot traps.This example has the fender machine gun boxes replaced with fuel tanks.

Production of the initial series of T-54s began slowly as 1,490 modifications were made. The Red Army received a tank that was superior to World War II designs and theoretically better than the newest tanks of potential opponents. The 100 mm gun fired BR-412 series full-calibreAPHEammunition, which had superior penetration ability when compared to the T-34 that it replaced.

The serial production version, designated T-54-1, differed from the second T-54 prototype. It had thicker hull armour (80 mm on the sides, 30 mm on the roof and 20 mm on the bottom).[citation needed]As production ramped up, quality problems emerged. Production was stopped and an improved T-54-2 (Ob'yekt137R) version was designed. Several changes were made and a new turret was fitted. The new dome-shaped turret with flat sides was inspired by the turret from theIS-3heavy tank; it is similar to the later T-54 turret but with a distinctive overhang at the rear. It also had a shorter bustle.[7]

The fender machine guns were removed in favour of a single bow-mounted machine gun. The transmission was modernised and the track was widened to 580 mm. The T-54-2 entered production in 1949, at Stalin Ural Tank Factory No. 183 (Uralvagonzavod). In 1951, a second modernization was made, designated T-54-3 (Ob'yekt137Sh), which had a new turret without side undercuts, and the new TSh-2-22 telescopic gunner's sight instead of the TSh-20. The tank featured the TDA smoke generating system. A command version was built, the T-54K (komandirskiy), with a second R-113 radio.[7]

T-54A and T-54B[edit]

In the beginning of the 1950s, the personnel of the OKB-520 design bureau of the Stalin Ural Tank Factory No. 183 (Uralvagonzavod) had been changed considerably. Morozov was replaced by Kolesnikow, who in turn was replaced byLeonid N. Kartsevin March 1953. The first decision of the new designer was to fit the 100 mmD-10T tank gunwith the STP-1 "Gorizont" vertical stabilizer. The new tank gun received the designation D-10TG and was fitted into the T-54's turret.[7]

The new tank received night vision equipment for the driver and was designated T-54A (Ob'yekt137G). Originally, this had a small muzzle counter-weight, which was later replaced with afume extractor.It was equipped with an OPVT wadingsnorkel,the TSh-2A-22 telescopic sight, TVN-1 infrared driver'speriscopeand IR headlight, a new R-113 radio, multi-stage engine air filter and radiator controls for improved engine performance, an electrical oil pump, a bilge pump, an automatic fire extinguisher and extra fuel tanks.[7]

The tank officially entered production in 1954 and service in 1955. It served as a basis for T-54AK command tank, with additional R-112 radio set (front line tanks were equipped with R-113 radio set), TNA-2 navigational device, ammunition load for the main gun decreased by 5 rounds and the AB-1-P/30 charging unit, which was produced in small numbers. In October 1954 a T-54A tank, designated as T-54M (Ob'yekt139) served as a testbed for new D-54T and D-54TS 100 mm smoothbore guns and "Raduga" and "Molniya" stabilization systems, which were later used in the T-62. These were not completely successful, so further T-55 development continued to use the D-10 series guns. It was fitted with V-54-6 engine developing 581 hp (433 kW). It never went into production.[7]

A new version, based on T-54A, designated T-54B (Ob'yekt137G2), was designed in 1955. It was fitted with a new 100 mm D-10T2S tank gun withSTP-2 "Tsyklon"2-plane stabilizer. It entered production in 1957. During the last four months of production, the new tanks were equipped with an L-2 "Luna" infrared searchlight, a TPN-1-22-11 IR gunner's sight, and an OU-3 IR commander's searchlight. Modern APFSDS ammunition was developed, dramatically enhancing the penetrative performance of the gun to keep it competitive with NATO armour developments. T-54B served as the basis for T-54BK command tank, which had exactly the same additional equipment as the T-54AK command tank.[7]

T-55[edit]

The T-55 front, rear and side elevations

Trials with nuclear weapons showed that a T-54 could survive a 2–15 kt nuclear charge at a range of more than 300 metres (980 ft) from the epicentre, but the crew had a chance of surviving at a minimum of 700 metres (2,300 ft). It was decided to create anNBC(nuclear, biological, and chemical) protection system which would start working 0.3 seconds after detecting gamma radiation.

The task of creating a basic PAZ (Protivoatomnaya Zashchita)NBC protectionsystem offering protection against the blast of a nuclear weapon and (radioactive) particulate filtration, but not against externalgamma radiationor gas,[8]was given to theKB-60 design bureauinKharkivand was completed in 1956. The documentation was sent to Uralvagonzavod. It was decided to increase the tank's abilities by changing its construction and introducing new production technologies. Many of those changes were initially tested on the T-54M (Ob'yekt139).

The tank was fitted with the newV-5512-cylinder four-stroke one-chamber, 38.88-litre water-cooled diesel engine developing 581 hp (433 kW). Engine power was increased by raising the pressure of the fuel delivery and charging degree. The designers planned to introduce a heating system for the engine compartment and MC-1 diesel fuel filter. The engine was to be started pneumatically with the use of an AK-150S charger and an electric starter. This eliminated the need for the tank to carry a tank filled with air. To allow easier access during maintenance and repairs, it was decided to change hatches over the engine compartment. To increase the operational range, 300 litres (66 imp gal; 79 US gal) fuel tanks were added to the front of the hull, increasing the overall fuel capacity to 680 litres (150 imp gal; 180 US gal).

The original T-55 lacked an antiaircraft machine gun mount.

The ammunition load for the main gun was increased from 34 to 45, with 18 shells stored in so-called "wet containers" located in hull fuel tanks (the concept for which came from Kartsev's cancelledOb'yekt140). The ammunition load included high explosive-fragmentation and anti-tank rounds and designers also planned to introduce the BK5Mhigh-explosive anti-tank(HEAT) rounds which penetrated 390 millimetres (15 in) thick armour. The TPKU commander's vision device was replaced by either the TPKUB or TPKU-2B. The gunner received a TNP-165 vision device.

The loader's hatch-mounted 12.7 mm DShK anti-aircraft heavy machine gun was dropped, because it was deemed worthless against high-performance jets. The tank was supposed to be equipped with the "Rosa" fire protection system. The tank had a thicker turret casting and the improved two-plane gun stabilization system from the T-54B, and night vision fighting equipment. To balance the weight of the new equipment, the armour on the back of the hull was thinned slightly.

The T-55 was superior to theIS-2,IS-3 andT-10heavy tanks in many respects, including the rate of fire of the gun (at least four compared to fewer than three rounds per minute). Despite somewhat thinner frontal turret armour (200 millimetres (7.9 in) instead of 250 millimetres (9.8 in)) it compared favourably with the IS-3, due to its improved antitank gun and better mobility. Heavy tanks soon fell from favour.

The old model of highly mobile medium tanks and heavily armoured heavy tanks was replaced by a new paradigm: the "main battle tank".Parallel developments in the West would produce similar results. Kartsev combined all the ongoing improvements being offered, or planned, on the T-54 into one design.[9]This became theOb'yekt155, and entered production at Uralvagonzavod 1 January 1958 as the T-55.[10]It was accepted for service with the Red Army on 8 May. It suffered a significant lapse in one area: there was no antiaircraft machine gun, which had been present on the T-54.[10]

After 1959, it served as a basis for the T-55K command tank which was equipped with an additional R-112 radio set, an AB-1-P/30 fuel powered accumulator charging unit, and TPN-1-22-11 night vision sight. All this additional equipment made it necessary to decrease the ammunition load for the main gun to 37 rounds and eliminate the bow machine gun. In the beginning of the 1960s, a T-55K was experimentally fitted with aUranTV relay apparatus for battlefield surveillance. The tank was fitted with an external camera, the picture from which was relayed to a receiver in a BTR-50PU command vehicle. There was an observation camera mounted on a folding mast which was in turn mounted on aUAZ 69car.

In 1961, a T-55 tank was used to test the "Almaz" TV complex, which was supposed to replace the standard observation devices right after a nuclear explosion or while fording a body of water. There was a camera mounted on the hull for the driver and two cameras mounted on the turret, one for aiming and one for observation, and the picture from the cameras was relayed to two control screens. The tank had the front hull fuel tanks and bow machine gun removed. The commander was seated in the driver's usual position while the driver sat next to him.

The cameras allowed battlefield observation and firing during daytime at ranges between 1.5 and 2 kilometres (0.93 and 1.24 mi). Because of the low quality of the equipment, the trials gave negative results. In the beginning of the 1960s, the OKB-29 design bureau inOmskwas working on adapting the tank to use a GTD-3T gas turbine engine developing 700 hp (522 kW). One T-55 tank fitted with this gas turbine engine passed trials but was deemed unsatisfactory and the design did not go into production.

The Omsk OKB-29 group tested three experimental T-55 tanks (designatedOb'yekt612) between 1962 and 1965 that were fitted with an automatic gearbox controlled by electro-hydraulic systems. The trials found that such gearboxes were prone to frequent breakdowns in tanks. At the same time theOb'yekt155ML, a T-55 fitted with a launcher for three 9M14 "Malyutka"(NATO code: AT-3 Sagger)ATGMsmounted on the rear of the turret, was tested. Along with standard tanks aflamethrower-armed version was designed (designated TO-55 (Ob'yekt482)), which was produced until 1962. It was fitted with 460-litre tanks filled with flammable liquid instead of the frontal hull fuel tanks. The flamethrower replaced the coaxial machine gun. This was a much better way to mount a flamethrower than in the experimentalOb'yekt483, based on the T-54 tank, where the flamethrower replaced the main gun. TO-55 flamethrower tanks were withdrawn from service in 1993.

T-55A[edit]

In 1961, development of improved NBC protection systems began. The goal was to protect the crew from fast neutrons; adequate protection against gamma radiation was provided by the thick armour and a PAZ basic NBC protection system.

The POV plasticized lead antiradiation lining was developed to provide the needed protection. It was installed in the interior, requiring the driver's hatch and thecoamingsover the turret hatches to be noticeably enlarged. This liner had the added benefit of protecting the crew from fragments of penetrated armour.

The tank was equipped with a full PAZ/FVU chemical filtration system. The coaxial 7.62 mm SGMT machine gun was replaced by a 7.62 mmPKT machine gun.The hull was lengthened from 6.04 m to 6.2 m. The hull machine gun was removed, making space for six more main gun rounds. These changes increased the weight of the vehicle to 38 tonnes.

The design work was done by OKB-520 design bureau of Uralvagonzavod under the leadership of Leonid N. Kartsev. The T-55A served as the basis for the T-55AK command tank.[7]

T-54/T-55 upgrades[edit]

ASomali National ArmyT-55.

In its long service life, the T-55 has been upgraded many times. Early T-55s were fitted with a new TSh-2B-32P sight. In 1959, some tanks received mountings for the PT-55 mine clearing system or the BTU/BTU-55 plough. In 1967, the improved 3BM-8 APDS round, which could penetrate 275 mm thick armour at a range of 2 km, was introduced. In 1970, new and old T-55 tanks had the loader's hatch modified to mount the 12.7 mmDShK machine gun,to deal with the threat of attack helicopters. Starting in 1974, T-55 tanks received the KTD-1 or KTD-2laser rangefinderin an armoured box over themantletof the main gun, and theR-123or R-123M radio set.[11]Simultaneously, efforts were made to modernize and increase the lifespan of the drive train.

During production, the T-55A was frequently modernised. In 1965, a new track was introduced that could be used for between 2,000 km and 3,000 km, which was twice the range of the old track. It needed a new drive sprocket, with 14 teeth instead of 13. Since 1974, T-55A tanks were equipped with a KTD-1 "Newa" rangefinder and a TSzS-32PM sight. All T-55A tanks were equipped with the TPN-1-22-11 night sight. The R-113 radio set was replaced by a R-123 radio set. Late production models had rubber side skirts and a driver's windshield for use during longer stints.

T-54 and T-55 tanks continued to be upgraded, refitted, and modernised into the 1990s. Advances in armour-piercing and high-explosive anti-tank (HEAT)shaped chargeammunition would improve the gun's antitank abilities in the 1960s and 1980s.

Sri Lanka ArmyT-55AM2

A wide array of upgrades in different price ranges are provided by many manufacturers in different countries, intended to bring the T-54/55 up to the abilities of newer MBTs, at a lower cost. Upgrades include new engines,explosive reactive armour,new main armament such as 120 mm or 125 mm guns, active protection systems, and fire control systems with range-finders or thermal sights. These improvements make it a potent main battle tank (MBT) for the low-end budget, even to this day.

One of these upgrade packages was a joint United States-China prototype designed and built by Cadillac Gage, now known asTextron.[12]Two prototypes based on the ChineseType 59 tank,a clone of the Soviet Union era T-55, namedJaguarwere produced inDetroit,Michigan. Modifications included a new turret design and improved hull. The engine compartment and fuel tanks on the shelves over the tracks were armour-protected. The Soviet-made 100 mm gun was replaced with the AmericanM68 105 mm rifled gunfitted with a thermal sleeve. AMarconifire control system which was originally developed for the Americanlight tank Stingraywas fitted. The vehicle incorporated a Cadillac Gage weapon stabilizer and gunner's sight equipped with an integral laser rangefinder. The powertrain was replaced with a Detroit Diesel 8V-92TA engine and XTG-411 automatic transmission. In 1989, two prototypes were completed. The chassis were provided by PRC, while the hull tops, turrets and powerplants were manufactured by Cadillac Gage Textron.[13]Field testing of the prototypes began in October 1989, four-months after the1989 Tiananmen Square protests and massacre,which ended cooperation between China and Cadillac Gage.

Another prototype upgrade package was produced by Teledyne Continental Motors (now General Dynamics Land Systems) for the Egyptian Army and was known as the T-54E. After further modifications and trials it was sent into mass production and received the designationRamses II.

As late as 2013, Ukrainian companies were reportedly developing T-55 main battle tank upgrades targeting the export market.[14]The Type 59 is still in production, in several variants.[15]

Description[edit]

A former Polish T-54 tank at the Panzermuseum Thun in Switzerland. The T-54 can be recognized apart from the highly-similar T-55 by the dome-shaped ventilator on the turret's roof and the tiny hole (for the vehicle's bow-mounted 7.62mm machine gun) in the centre of the tank's front glacis-plate.

The T-54 and T-55 have a cabin layout shared with many post-World War II tanks, with the fighting compartment in the front, engine compartment in the rear, and a dome-shapedturretin the center of the hull. The driver's hatch is on the front left of the hull roof. In the turret, the commander is seated on the left, with the gunner to his front and the loader on the right. The tank has aflat track,[16]meaning no support rollers, thesuspensionhas the drivesprocketat the rear, anddead track.Engine exhaust is on the left fender. There is a prominent gap between the first and second road wheel pairs, a distinguishing feature from the T-62, which has progressively larger spaces between road wheels towards the rear.

The T-54 and T-55 tanks are outwardly very similar and difficult to distinguish visually. Many T-54s were also updated to T-55 standards, so the distinction is often downplayed with the collective nameT-54/55.Soviet tanks were factory-overhauled every 7,000 km and often given minor technology updates. Many states have added or modified the tank's equipment; India, for example, affixed fake fume extractors to its T-54s and T-55s so that its gunners would not confuse them with Pakistani Type 59s.[17]

The older T-54 can be distinguished from the T-55 by a dome-shaped ventilator on the front right of the turret and a driver-operated SGMT 7.62 mm machine gun mounted to fire through a tiny hole in the center of the hull's front. Early T-54s lacked a gun fume extractor, had an undercut at the turret's rear, and a distinctive "pig-snout" gun mantlet.

Advantages and drawbacks[edit]

An abandoned Iraqi Army Type 59 tank lies among the wreckage of many other Iraqi vehicles, such as trucks, cars and buses, somewhere along theHighway of Deathin April 1991.

By 1950s standards the T-54 was excellent, packing considerable firepower and armour protection in a reliable design whilst also being smaller and lighter than contemporary NATO designs. However at the time the T-54 lacked effective sub-calibre ammunition and was reliant on HEAT rounds for anti-tank ammunition until the 1960s. This and the fact that the T-54 had a simple fire-control system meant that the T-54 was inaccurate at longer ranges.[18]

The T-55 introduced the world's first first-generation protective suite to provide NBC protection. This was done due to Soviet researchers finding that the survivability of tanks and their crews against tactical nuclear weapons was poor.[19]

The low turret profile of the tanks prevents them from depressing their main guns by more than 5° since the breech would strike the ceiling when fired, which limits the ability to cover terrain by fire from ahull-downposition on a reverse slope. As with most tanks ofthat generation,the internal ammunition supply is not shielded, increasing the risk that any enemy penetration of the fighting compartment could cause a catastrophic secondary explosion. The T-54 lacks NBC protection, and a turret basket, which meant that crewmen had to physically rotate and keep up with a rotating turret as the hull in which they stood didn't move with the turret. Additionally, early models also lacked gun stabilisation. Most of these problems were corrected in the otherwise largely identical T-55 tank.[citation needed]

Together, the T-54/55 tanks have been manufactured in the tens of thousands, and many still remain in reserve, or even in front-line use among lower-technology fighting forces. Abundance and age together make these tanks cheap and easy to purchase.[20]

Production history[edit]

Soviet Union[edit]

T-54-1 production was slow at first, as only 3 vehicles were built in 1946 and 22 in 1947. 285 T-54-1 tanks were built in 1948 by Stalin Ural Tank Factory No. 183 (Uralvagonzavod); by then it had completely replaced T-44 production at Uralvagonzavod, and Kharkiv Diesel Factory No. 75 (KhPZ). Production was stopped because of a low level of production quality and frequent breakdowns. The T-54-2 entered production in 1949 at Uralvagonzavod, which produced 423 tanks by the end of 1950. It replaced the T-34 in production at the Omsk Factory No. 183 in 1950. In 1951, over 800 T-54-2 tanks were produced. The T-54-2 remained in production until 1952. The T-54A was produced between 1955 and 1957. The T-54B was produced between 1957 and April 1959. The T-55 was produced by Uralvagonzavod between 1958 and 1962. The T-55K command tank was produced from 1959. The TO-55 (Ob'yekt482) flamethrower tank was produced until 1962.

Overall, 35,000 T-54-1, T-54-2, T-54 (T-54-3), T-54A, T-54B, T-54AK1, T-54AK2, T-54BK1 and T-54BK2 tanks were produced between 1946 and 1958 and 27,500 T-55, T-55A, T-55K1, T-55K2, T-55K3, T-55AK1, T-55AK2 and T-55AK3 tanks were produced between 1955 and 1981.

Polish People's Republic[edit]

Polish T-55A tanks on the streets duringMartial Law in Poland.

Polish People's Republicproduced 3,000 T-54, T-54A, T-54AD and T-54AM tanks between 1956 and 1964 and 7,000 T-55 (between 1964 and 1968), T-55L, T-55AD-1 and T-55AD-2 tanks (between 1968 and 1979).[citation needed]

Czechoslovakia[edit]

Czechoslovakiaproduced 2,700 T-54A, T-54AM, T-54AK, T-54AMK tanks (between 1957 and 1966) and 8,300 T-55 and T-55A tanks (between 1964 and 1983; T-55A was probably produced since 1968). Most of them were for export.[citation needed]

Service history[edit]

Soviet Union and successors[edit]

The T-54/55 and theT-62were the two most common tanks in Soviet inventory—in the mid-1970s the two tank types together comprised approximately 85% of the Soviet Army's tanks.[citation needed]

Soviet T-54 tanks served in combat during theHungarian Revolutionin 1956 and a few were successfully knocked out by the defending anti-Soviet Hungarian resistance-fighters and rebels usingMolotov cocktailsand several anti-tank guns.[21]The local anti-communist revolutionaries delivered one captured T-54A to the British Embassy inBudapest,[citation needed]the analyses and studies of which helped and spurred the development of theRoyal Ordnance L7105 mmtank gun.

At the initial stage of thewar in Afghanistanin 1979–1980, about 800 Soviet tanks were used, consisting of 39 battalions, mainly armed with T-54s and T-55s. In 1979, only one T-55 tank was lost. Since the beginning of 1980, they began to be replaced by modern T-62 andT-64tanks.[22]

InRussia,most of the T-62 and the T-55 were auctioned off in 2012, with all Russian active-duty military units mainly operating theT-72,theT-80and theT-90.However, T-62s, T-55s and T-54s have seen combat in the 2022 Ukraine War after catastrophic Russian tank losses in failed early offensives depleted the inventory of more modern tanks.[23][24]

In Ukraine, in 1997The Military Balancereported that Ukraine had 154 T-55 tanks,[25]but by 2014 the number was only 20, all in store.[26]

Middle East[edit]

Israeli Tiran-4Sh tank, which was an upgraded T-54A up-gunned with a 105 mm M68 main gun.

During the 1967Six-Day War,U.S.-suppliedM48 Pattontanks, BritishCenturiontanks, and even upgraded World War II–era 75 mm M-50 and 105 mm armed M-51Super Shermansfaced T-55s. This mix of Israeli tanks, combined with superior planning of operations and superior airpower, proved to be more than capable of dealing with the T-54/T-55 series.[27]

During theJordanian Civil War,Syrian tanks inflicted heavy losses on JordanianCenturions.In one case, a squadron of T-55s stopped the advance of a large Jordanian column, with 19 Centurions destroyed and up to 10 Syrian T-55s lost in the battle.[28]According to Israeli intelligence, Jordan lost 75 to 90 tanks out of 200 involved,[29]most to Syrian T-55 fire at ar-Ramtha.[30]In turn total Syrian tank losses accounted to 62 T-55 mostly breakdowns left on enemy territory.[31]

By the 1973Yom Kippur War,the T-54A and T-55's gun was starting to lose its competitive effectiveness relative to the 105 mm Royal Ordnance L7 gun mounted inIsraeliCenturion Mk V andM60A1tanks. Israeli tanks fitted with the L7 105mm gun suffered greatly from the new Soviet HEAT 3BК5 ammunition fired by the T-55s.[32]During the entire war, 1,063 Israeli tanks were disabled[33](more than half of them Centurions), about 600 of which were completely destroyed or captured.[34]Some 35 Israeli Centurions were captured by Egypt,[35]dozens more were captured by Syria, Iraq[36]and four by Jordan.[37]On the other hand, 2,250 Arab tanks were disabled[33](including 33 Jordanian Centurions, 18 of them destroyed[37]), 1,274 of them were completely destroyed or captured[38](643 tanks were lost in the north and 631 were lost in the south[39])

Israel captured many fromEgyptin 1967, along with a few T-55s fromSyria,and kept some of them in service. They were upgraded with a 105 mm NATO-standard L7 or M68, a US version of the L7, replacing the old Soviet 100 mm D-10, and a General Motors diesel replacing the original Soviet diesel engine. The Israelis designated theseTiran-5medium tanks, and they were used by reserve units until the early 1990s. Most of these were then sold to assorted Third World countries, some of them in Latin America, and the rest were heavily modified, converted into theAchzaritheavyarmoured personnel carrier.

In theLebanese Civil War,on 10 June 1982, eight Israeli M48A3s, two M60A1s and at least three M113 APCs were lost in an ambush by Syrian T-55 tanks andBMP-1APCs during theBattle of Sultan Yacoub.

The tank was heavily used during theIran–Iraq Warof 1980–88. T-54/55 participated in thebiggest tank battleof the war in early 1981.Iranlost 214Chieftainand M60A1 tanks in the battle. In return,Iraqlost 45 T-55 and T-62 tanks.[40]Another known tank battle occurred on 11 October 1980, when a large Iranian convoy supported by a battalion of Chieftains (92nd Division) was ambushed by battalion of Iraqi T-55s (26th Brigade).[41]During the battle, the Iranians lost 20 Chieftains plus other armoured vehicles and withdrew.[42]

Many of Iraqi T-55s saw action duringOperation Desert Stormin Iraq and Kuwait in January/February 1991, and during the 2003US/UK invasion of Iraqwith poor results.

Vietnam War[edit]

AnLASV-colored T-54 tank on display in theVietnam Military History Museumin Hanoi.

During theVietnam War,thePeople's Army of Vietnam(PAVN) and its proxy military forceLiberation Army of South Vietnam(LASV) used T-54s, along with its Chinese-built copy (the Type 59), extensively against the South VietnameseArmy of the Republic of Vietnam(ARVN) and their allied US forces.

The PAVN/LASV and the ARVN engaged each other with tanks for the first time duringOperation Lam Son 719in February 1971. During that battle, 17M41 Walker Bulldoglight tanks of the ARVN's 1st Armoured Brigade claimed to have destroyed 22 PAVN tanks, a total of 6T-54sand 16PT-76light amphibious tanks, at no loss to themselves,[43][44][full citation needed]but their friendly units lost 5 M41s and 25 armoured personnel carriers (APCs), mainlyM113APCs.[45]

On Easter Sunday, 2 April 1972, the newly activated ARVN20th Tank Regiment,comprising approximately 57 M48A3 Patton main battle tanks (note that ARVNregimentswere equivalent to USbattalions,and ARVNsquadronswere equivalent to UScompaniesortroops)[46]received reports from friendly intelligence units of a large PAVN armoured column moving towardsDong Ha,the largest South Vietnamese city near theVietnamese DMZlocated on the17th Parallel.At about noontime, the tank crewmen of the ARVN's 1st Squadron observed enemy armour moving south along Highway 1 towards Dong Ha and promptly concealed their tanks on high ground with a good vantage point against their enemy. Waiting for the PAVN tank column to close to between 2500 and 3000 meters, the 90mm main guns of the Patton tanks opened fire and quickly destroyed nine PT-76s and two T-54s.[46]The surviving PAVN armour, unable to locate their enemy's positions, hastily turned about and withdrew shortly afterwards.

On 9 April 1972, all three squadrons of the 20th Tank Regiment (57 M48 tanks) fought hard against enemy armour, firing upon PAVN tanks accompanied by large masses of infantry, again while occupying the strategically important high ground. This time, similarly, the Pattons opened fire at approximately 2800 meters. A few answering-shots from the T-54s fell short and the PAVN tanks began to scatter after suffering considerable losses and heavy casualties. By the end of the day, the 20th claimed destroy sixteen T-54s and captured one Type 59 at no loss to themselves.[47](The PAVN confirmed six tank were destroyed[48])

PAVN armoured units equipped with the T-54 tank achieved one of their largest victories in April 1972 when the PAVN 203rd Armoured Regiment attacked the ARVN's22nd Infantry Divisionbased atTân Cảnh Base Camp,which dominated a main route into the city ofKon Tum,located near the 17th Parallel. After a two-day-long intense artillery barrage, eighteen T-54 tanks attacked the camp at dawn from two different directions, thus breaking apart the ARVN unit into two and splitting up its forces, which quickly abandoned its positions and withdrew.[49][full citation needed]T-54 tank No. 377 had managed to destroy seven ARVN M41s before it was finally destroyed byM72 LAWanti-tank rocket launchers fielded by the South Vietnamese infantry.[50]The PAVN destroyed 18 M41 light tanks together with 31 M113 APCs and captured 17 M41s intact, while losing only two T-54 tanks and one PT-76 tank in the armoured skirmish.[51]

At the very end of the war on the 30 April 1975, a PAVN T-54 smashed through the main gate of the RVNPresidential Palacein the capital city of Saigon, accompanied by onrushing North Vietnamese troops, at the conclusion of North Vietnam's conquering of the South. This widely seen image has come to be regarded by many as perhaps the defining moment of the end of the bloody 20-year-long conflict in Vietnam, and thefall of Republic of Vietnam.During the war, PAVN tank units were involved in 211 battles, claimed 20,000+ enemy killed, destroyed more than 2,000 enemy tanks/APCs, 870 other military vehicles, and 3,500 enemy bunkers, and shot down 35 aircraft or helicopters, overwhelmingly using T-54s.[52]The PAVN lost an estimated 250 (1972 - 150, 1973-1975 - 100) T-54s during the war.[citation needed]

Following the Vietnam War, Vietnam's T-54/55s and Type 59s continued to see much combat activity againstneighbouring CambodiaandChina to their northbetween 1978 and 1979. Just like many developing countries around the world which continue to operate the T-54/55, at least 900 T-54s, along with a similar number of T-55s and Type 59s, are still in active military service with theSocialist Republic of Vietnamuntil the present day. Some of them are slated to be replaced by the more modern T-90S/SK.

Ogaden War[edit]

During the largest tank battle of the Ogaden War - theBattle of Jijiga(August–September 1977), 124 Somali tanks, mostly T-55s,[53]defeated 108 Ethiopian tanks, mainlyM47 Pattonsand M41 Walker Bulldogs.[54]The Ethiopians lost 43 tanks during the battle.[55]

Angola[edit]

T-54/T-55s began appearing in Southern Africa in the late 1970s, when many emerging Marxist states, particularlyAngolaandMozambique,were bolstered with modern Soviet military hardware.[17]The T-55's dependability and ruggedness proved well-suited to the local combat environments.[56]Survivability of opposing medium-armour vehicles deployed byUNITAand theSouth African Defence Force(SADF) against late model MBTs used in theAngolan Civil Warremained a major concern throughout that conflict.[57]Angolan ArmyT-54s were first blooded duringOperation Askari,in 1981.[58]At least five[59]were subsequently destroyed in encounters with South AfricanElandorRatel-90armoured cars, and some were captured.[60]Soviet sources confirm that many T-55s were penetrated by an Eland's 90 mm low-pressure gun.[61]Nevertheless, multiple HEAT rounds were needed to guarantee sufficient damage against a T-55's frontal arc[62]and SADF anti-tank teams forced to operate in platoons accordingly.[57]

During theBattle of Cuito Cuanavale,another three T-55s of Angola's 21st Brigade were shot out byRatel IFVsarmed withZT3 IngweATGMs near the Lomba River.[63]On 9 November 1987, an engagement between South African and Angolan tanks occurred when thirteenOlifant Mk1Aseliminated two T-55s in a nine-minute skirmish.[60][64][65]T-55s again participated in a critical engagement near Cuito Cuanavale on 14 February 1988, when Cuba's 3rd Tank Battalion counter-attacked to spare Angola's 16th Brigade virtual annihilation by61 Mechanised Infantry Battalion Groupand the4th South African Infantry Battalion.Six T-55s were lost (three to RPGs, three to Olifants, one more was damaged), but the attack blunted the South African advance, safeguarding the cohesion of the Angolan line. Cuban and Soviet sources maintain that they destroyed ten Olifant tanks[66]and twelve Ratels,[63]while South African and Western sources maintain that only one Olifant and one Ratel were damaged, and one Ratel destroyed.[67]

India and Pakistan[edit]

Indian ArmyT-55 during the incursion intoJessore,East Pakistanin 1971.

TheIndian Armyhas used their T-54s and T-55s extensively in its conflicts with Pakistan between the 1970s to the 1980s. Pakistan also used some T-54As and Chinese Type 59 copies.[68]

At one point India added fake bore evacuators to its tanks, to enable them to be distinguished easily from Pakistan's tanks.

The first meeting of the T-55 with enemy tanks occurred in the area of Garibpur on 22 November 1971. Indian T-55 tanks (63 Cavalry) destroyed 3 PakistaniM24 Chaffeetanks (29 Cavalry) in the area.[69]

On 10–11 December, during the Battle of Nainakot, Indian T-55s (14 Cavalry Scinde Horse) in two battles destroyed 9 Pakistani M47/48 tanks (33 Cavalry), without any loss.[70]

Battle of Basantar,also known as the Battle of Barapind (4–16 December 1971), was one of the vital battles fought as part of theIndo-Pakistani War of 1971in the western sector of India. India had destroyed close to 46M48 tanks[71][72]and losing only 10 tanks in the process.

At the end of the war, one of the last tank battles took place in the Naogaon area, a company of Pakistani Chaffee tanks attacked Indian T-55s, but lost 5 Chaffee tanks and was forced to retreat to Bogra.[73]

Russo-Ukrainian War[edit]

Ukrainian upgraded M-55S

On 7 July 2014, a T-54 from a museum inDonetskwas commissioned into theRussian people's militias.[74][failed verification]

Footage from theBattle of Mariupol(May 2022) indicates that Ukrainian soldiers used a single T-54 which had previously been converted to a historical memorial at the Azovstal plant. The tank was removed from the pedestal, probably towed to its combat position and used by Ukrainian fighters for defence. According to the few existing pictures, the vehicle was heavily damaged in combat and abandoned.[75]

Ukrainian soldiers trained with 28M-55Stanks delivered in October 2022 by Slovenia. The Model M-55S is a heavily reinforced tank and has been updated with a NATO L7 105 mm gun, upgraded armour protection, a digital ballistic computer, an upgraded engine and new tracks.[76]In December 2022 the volunteer47th Assault Brigadewas equipped with 28 M-55S.[77]On 14 July 2023 an M-55S received a direct hit into the upper armour by a 152 mm guidedKrasnopolRussian artillery shell.[78]Experts estimate that the M-55S tank and crew survived due to reactive armour upgrades; the original T-55 would not have survived such a direct hit from anti-armour weapons.[79]A few days later on 22 July, a second Ukrainian M-55S took a direct hit west of Kreminna and exploded.[80] M-55S nick name is Hybrid tank. The M-55S has better fire-controls than most Russian tanks have, plus 200 millimetres thick armour before the addition of reactive armour blocks, which is superior to the armour on Ukraine’s German-madeLeopard 1A5tanks.[81]

On 21–22 March 2023, photos and videos of a Russian military train with T-54s and T-54Bs appeared on social media,[82]and an interview by Volya Media and reported by Forbes seems to confirm the intention of deploying them to Ukraine.[83]Images of T-55 in Ukraine first emerged in April 2023 confirming their deployment by the Russian armed forces. No additional modernization or ERA application appears to be done.[84]On 19 June, footage of a Russian T-54/55 converted into a remote-controlledVBIEDbeing destroyed by Ukrainian forces near Marinka, Donetsk Oblast was released.[85]

As of May 2024 Russia is visually confirmed to have suffered 10 T-55 losses (two T-54-3M, one T-54B, three T-55A and four unknown T-54/55).[86]

An analysis of Russian armour tactics in Ukraine by theRoyal United Services Instituteclaimed that Russian T-55s are not being deployed as front-line armour assets, but asassault gunsattached to infantry formations.[87]This is due to ongoing shortages of Russian infantry fighting vehicle (IFV)s, which normally fulfil the role of providing organic fire support to infantry.[87]The T-55s' main armament range and optics are superior to those of many Russian IFVs such as theBMP-2,prompting Russian commanders to favour using them in the support of infantry engagements at longer standoff ranges, where they cannot be easily countered by Ukrainianman-portable anti-tank weapons.[87]

Other conflicts[edit]

T-54 tanks[88]were used during theCambodian Civil Warand the Cambodian–Vietnamese War between the 1970s to the 1980s.[89]During theUgandan-Tanzanian Warof 1978 to 1979,Libyasent an expeditionary military force to aid Ugandan dictatorIdi Aminin his conflict with Tanzania, which included the supply of a few dozen T-54/55 tanks. Some of these tanks saw action against Tanzanian forces.,[90]with at least limited success.

In Poland in 1983–83,T-55Ltanks were deployed during the imposition ofmartial lawto intimidate the population (seemingly growing ever-more anti-communist) and to suppress overt displays against their communist government.[91]

The T-55 was the most numerous tank of theYugoslav People's Army(JNA). It was the mainstay of armoured combat units during theYugoslav Wars,where it proved vulnerable to infantry equipped with anti-tank rockets and weaponry and to misemployment in urban areas and unfriendly terrain. But there were too many of them in service for them to be replaced entirely. During theBattle of Vukovar,where the JNA grouped a large part of its tank force, a number were destroyed, almost exclusively by infantry-carried anti-tank weapons. The T-55 tank remained the most common tank in the armies of the various Yugoslavian successor states until recently and it was the most-used tank by all armies during the decades-long wars. T-55s were also used by Yugoslavia in theKosovo Warand in Macedonia (nowNorth Macedonia) during the2001 insurgency in Macedonia,and by Russian peacekeepers after the withdrawal of Yugoslav forces from Kosovo. TheKosovo Liberation Army(National Liberation Army of Kosovo) captured a T-55 from the Macedonian Army during thebattle of Raduša.[92]

Yugoslav T-55 tank captured by Croatian army during the Croatian War of Independence is now displayed in city Valpovo, Croatia

The T-55 has been used byEthiopiain the conflict with theIslamic Courts UnioninSomaliaand used by various warring factions in theSomali Civil Warafter the fall of the dictatorialSiad Barreregime in the 1990s.

China produced thousands of Type 59 tanks (based on the Soviet T-54A) for thePeople's Liberation Army,which were used during the Vietnam War and used en-masse against Vietnam in the Sino-Vietnamese War and sold the similar (but upgraded)Type 69tanks to both Iran and Iraq during the Iran–Iraq War between 1980 and 1988. A considerable number saw action against Coalition forces during Operation Desert Storm in Iraq and Kuwait in January and February 1991 and during the US invasion of Iraq in 2003 (Operation Iraqi Freedom), with extremely poor showing against more-modern tanks fielded by US and British troops, such as theM1 Abramsand theChallenger 1andChallenger 2tanks.

TheSri Lanka Armyacquired 25 T-55As and 2 T-55 ARVs from Czechoslovakia in 1991, forming its first tank unit, the 4th Armoured Regiment of theSri Lanka Armoured Corps.The T-55s were first used in Operation Balavegaya II in an offensive capacity. Due to operation demands of the escalatingSri Lankan Civil War,T-55As of the regiment were deployed in pairs to forward bases to support infantry with limited training. This resulted in the capture of two T-55A tanks by theLTTEin theBattle of Poonerynin November 1993. One of these were destroyed soon after by theSri Lanka Air Force,the other was operated by the LTTE until the last days of the war, when it was re-captured. The T-55s spearheadedOperation Riviresa.In 2000, the army acquired Czech T-55AM2s which were deployed in offensive operations supporting infantry during the pitch battles of last stages of the Sri Lankan Civil War including theBattle of Jaffna.[93]

T-55 tanks have seen use on both sides of the2011 Libyan civil war,withanti-Gaddafi forceseither stealing them or having them contributed by defecting members of theLibyan Army.

T-55s have been used by theSudanese Armed Forcesduring theconflict in South Kordofan and Blue Nile.At least 4 were captured and 1 destroyed by theSudan People's Liberation Movement-Northon 10 December 2012.[94]

The T-55 has seen active combat service with theFARDCTooltip Forces Armées de la République Démocratique du Congoof theDemocratic Republic of the Congo,supported by theUnited Nations Force Intervention Brigade(UN FIB), in 2013–14 during the campaign to suppress theMarch 23 Movement(M23) rebel group.

Russia announced that several T-55 tanks used byISILin Syria were destroyed in an air attack conducted by its forces on 5 October 2015.[citation needed]

List of conflicts[edit]

Civilians crowding atop a T-55 tank inLibyain 2011.
A Macedonian Army T-55 tank and its crew, shown here in 2001.

Operators and variants[edit]

The T-55 has been used worldwide by as many as 50 countries and quasi-armies. They have been subject to many improvements throughout their production history and afterward, and many are still in service today.

Modifications to the T-54/55 series over the years have changed almost every aspect of the vehicle. Initially, Soviet modifications included a better turret shape, improved NBC protection and an improved powerplant. Later, improved fire-control equipment and night-vision equipment was added.

Foreign improvements, both in Warsaw Pact nations and elsewhere, have further improved protection, powerplant, and firepower. T-54/55s have been re-armed with improved tank guns, AA machine guns, advanced armour arrays, and technologies, such as laser range finders and computerized fire control systems, that did not exist when the tank was first being built in the early days of theCold War.

Museums with T-54/T-55 on display[edit]

  • There is a T-55 captured from Iraqi forces during Operation Desert Storm at USS Alabama Battleship Park, Mobile Alabama.[97]
  • There is a T-55 on outdoor display at the Fort Polk Museum, Fort Polk Louisiana, United States.[98]
  • The Ontario Regiment Museum has an operational T-54.[99]
  • There is a T-54 outside of K-W Surplus in Kitchener, Ontario, Canada[100]
  • Museum of Military Technology "Gryf" in Gdynia, Poland offers rides in T-55A.[101]
  • There is a T-54 at the Tank Museum in Thun, Switzerland.[102]
  • The Musee des Blindes in Saumur, France has both an original T-54 and a T-54/55 upgrade.
  • The American Armored Foundation (AAF) Tank Museum in Danville, VA, USA has an Iraqi T-55 tank captured during the Persian Gulf War.
  • The Armored Corps Memorial Site and Museum at Latrun
  • There is a T-54AM at theGerman Tank MuseuminMunster,Germany.[103]
  • One Czechoslovak made T-55A gifted by Germany afterreunificationin 1991, as OPFOR familiarization aid is on display at theEtimesgutTank Museum inAnkara.[104]

There is a T-55 at the Australian Armour and Artillery Museum in Cairns, Australia

See also[edit]

Tanks of comparable role, performance and era[edit]

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General bibliography[edit]

  • Cockburn, Andrew (1983).The Threat: Inside the Soviet Military Machine.New York: Random House. 3 May 1983ISBN0-394-52402-0.
  • Dunstan, Simon (1982).Vietnam Tracks: Armor in Battle 1945–75.Osprey Publications.ISBN0-89141-171-2.
  • Foss, Christopher F., ed (2005).Jane's Armour and Artillery 2005–2006,26th edition. 15 August 2005ISBN0-7106-2686-X.
  • Gelbart, Marsh (1996).Tanks: Main Battle and Light Tanks.London: Brassey's.ISBN1-85753-168-X.
  • Starry, Gen. Donn A. (1989).Mounted Combat in VietnamArchived16 July 2009 at theWayback Machine.Washington, D.C.: Vietnam Studies, Department of the Army. First printed in 1978-CMH Pub 90–17.
  • Hunnicutt, R. P.Patton: A History of the American Main Battle Tank.ISBN0-89141-230-1.
  • Hunnicutt, R. P.Abrams: A History of the American Main Battle Tank.Volume 2. Presidio Press 1990.
  • Hunnicutt, R. P.Sheridan: A History of the American Light TankVolume 2; 1995, Presidio Press.ISBN0-89141-462-2.
  • Zaloga, Steven J;Johnson, Hugh (2004).T-54 and T-55 Main Battle Tanks 1944–2004.Oxford: Osprey.ISBN1-84176-792-1.
  • Zaloga, Steven J;Katz, Samuel (1 September 1996).Tank Battles of the Mid-East Wars 1: The Wars of 1948–1973.Concord.ISBN978-962-361-612-6.
  • James Kinnear, Stephen Sewell and Andrey Aksenov,Soviet T-54 Main Battle Tank,General Military series, Osprey Publishing Ltd, Oxford 2018.ISBN978 1 4728 3330 3
  • James Kinnear, Stephen Sewell and Andrey Aksenov,Soviet T-55 Main Battle Tank,General Military series, Osprey Publishing Ltd, Oxford 2019.ISBN978 1 4728 3855 1
  • Anthony Tucker-Jones,Images of War: T–54/55, The Soviet Army’s Cold War main battle tank – rare photographs from wartime archives,Pen & Sword Military, Barnsley 2017.ISBN978 1 47389 109 8
  • Krzysztof M. Gaj,Czołg T-55AM i pochodne (T-55AD-1M, T-55AD-2M, T-55AMS),Sowa Sp. z o.o., 2013,ISBN978-83-936039-3-0

External links[edit]