M36 Jackson Tank Destroyer: America’s 90 mm Tank Killer

The M36 Jackson was the most powerful American tank destroyer of the Second World War, and the only American vehicle in service in 1944 with a gun capable of dealing with the German Panther and Tiger tanks at long range. Developed from the M10 Wolverine, it mounted a 90 mm gun in a large, open-topped turret on a Sherman chassis, and it entered service in the summer of 1944. About 2,324 M36 Jacksons were built between 1943 and 1945, and they served in North-West Europe, where they proved effective in the Battle of the Bulge and in the final advance into Germany, and after the war in Korea and in many other conflicts.

The M36 Jackson was named, unofficially, after the Confederate general Thomas Jackson, following the American practice of naming tank destroyers after generals, although the name was never official. The vehicle was developed in response to the appearance of the Panther and Tiger tanks, which the 3-inch gun of the M10 could not reliably defeat. The 90 mm gun, originally an anti-aircraft gun, was adapted for use in a tank destroyer, and it gave the M36 a firepower that was unmatched by any other American vehicle of the war. The M36’s turret was large and open-topped, which gave the crew good visibility but left them exposed, and its Sherman chassis gave it good mobility and reliability.

Today the M36 Jackson is remembered as one of the best American tank destroyers of the war, a vehicle that was well designed for its role and that served for decades after the war in many countries. Surviving examples are numerous, in museums and in private collections around the world, and the type is well represented in the literature on American tank destroyers. For historians of armoured warfare, the M36 illustrates the American tank destroyer doctrine, and the value of a powerful gun on a reliable chassis.

1. Key Facts

Field	Value
Type	Tank destroyer (gun motor carriage)
Origin	United States
Designed	1942–1943 (developed from M10, 90 mm gun)
In service	1944–1950s (United States); later with many other users
Produced	Approximately 2,324
Manufacturers	Fisher Body, Massey-Harris, Montreal Locomotive Works
Crew	5 (commander, gunner, loader, driver, assistant driver)
Weight	Approximately 28.6 tons
Length	Approximately 7.47 m (24 ft 6 in)
Width	Approximately 3.05 m (10 ft)
Height	Approximately 3.28 m (10 ft 9 in)
Armour	Up to 76 mm (turret front); hull up to 51 mm
Main armament	90 mm M3 gun
Secondary armament	12.7 mm M2 Browning machine gun (on turret roof)
Engine	Ford GAA V8 petrol engine, approximately 500 hp
Speed	Approximately 48 km/h (30 mph) maximum on roads
Range	Approximately 240 km (149 miles) on roads

2. Background and Development

The Need for a 90 mm Tank Destroyer

The M36 Jackson grew out of the American Army’s need for a tank destroyer with a gun capable of defeating the German Panther and Tiger tanks. The M10 Wolverine, which entered service in 1943 with a 3-inch gun, had proved effective against the Panzer IV but inadequate against the Panther and Tiger. The Army needed a more powerful gun, and the 90 mm anti-aircraft gun was the obvious choice. The 90 mm gun was adapted for use in a tank destroyer, and the M10 chassis was modified to carry it. The result was the M36, which entered production in 1943 and service in 1944. The development was rapid, because the M36 used the proven M10 chassis and a gun that was already in production.

Design and Production

The M36 was designed by the Ordnance Department, using the M10 chassis and a new, larger turret to mount the 90 mm gun. The turret was open-topped, like the M10’s, and it was large enough to accommodate the 90 mm gun and its ammunition. The hull was the Sherman chassis, with a Ford GAA engine producing about 500 horsepower, and the vehicle had a top speed of about 48 km/h. Production began at Fisher Body in 1943, and about 2,324 M36 vehicles were built, including conversions of M10 hulls. The M36 entered service in the summer of 1944, and it was issued to tank destroyer battalions in North-West Europe, where it served alongside the M10 and the M18 Hellcat.

Doctrine and the Tank Destroyer Force

American doctrine assigned tank destroyers to separate tank destroyer battalions, which were held as a mobile reserve and committed to deal with enemy tank breakthroughs. The doctrine was that tank destroyers, with their powerful guns and their speed, could defeat enemy tanks, while tanks themselves were for supporting infantry. The M36 was designed for this role, and its 90 mm gun gave it the firepower to defeat any German tank. In practice, however, the doctrine was often ignored, and tank destroyers were used as tanks, supporting infantry and fighting in the line. The M36’s service in Europe showed that the doctrine was flawed, but that the vehicle itself was capable, and that its gun was effective in any role.

3. Design

Hull, Tracks and Mobility

The M36 Jackson used the hull and chassis of the Sherman tank, with its vertical volute spring suspension and its Ford GAA engine. The hull was low and well armoured for a tank destroyer, with up to 51 mm of frontal armour, and the tracks were wide enough to give good cross-country mobility. The top speed of about 48 km/h was adequate for a tank destroyer, and the range of about 240 km gave it a good operational reach. The M36 was reliable, because it used the proven Sherman chassis, and it was easy to maintain, with spare parts available from Sherman production. The vehicle’s mobility was good, and its crews valued its reliability.

Armour and Protection

The armour of the M36 was up to 76 mm on the front of the turret and up to 51 mm on the hull, which was thicker than the M10’s armour and gave the crew better protection. The turret was open-topped, which left the crew exposed to artillery fire and to air attack, but it also gave the crew good visibility and room to work the large 90 mm gun. The open top was a deliberate trade-off, made to save weight and to allow the gun to be mounted in a turret that could traverse fully. The M36 was not meant to fight in the open, and its protection was adequate for a vehicle that relied on concealment and on firing from ambush. The crew had some protection from small-arms fire, but they were vulnerable to mortars and to artillery.

The Turret and the 90 mm Gun

The turret of the M36 was a large, open-topped turret, with a commander, a gunner, and a loader, and it mounted the 90 mm M3 gun and a coaxial machine gun. The 90 mm gun was a powerful weapon, capable of firing armour-piercing shot that could penetrate the frontal armour of the Panther at normal combat ranges and the Tiger at longer ranges, and it was the most powerful American tank gun of the war. The gun was a major advance over the M10’s 3-inch gun, and it gave the M36 a firepower that was unmatched by any other American vehicle. The turret could traverse 360 degrees, and the gun had a good elevation and depression. The 90 mm gun was the M36’s greatest strength, and it was the reason the vehicle was valued by its crews.

Armament, Crew and Ergonomics

The crew of the M36 was five: a commander, a gunner, a loader, a driver, and an assistant driver who also operated the bow machine gun. The three-man turret was a major improvement over the M10’s turret, because it allowed the commander to command the tank without also having to load the gun. The M36 carried about 47 rounds for the 90 mm gun and a large number of rounds for the machine guns. The vehicle had a radio set, and its internal communications were good. The M36’s ergonomics were good for a tank destroyer, and its crews generally praised its layout, its visibility, and its gun. The M36 was a well-designed vehicle, and its crew layout was one of its strengths.

4. Variants

M36, M36B1 and M36B2

The three main versions of the M36 were the M36, built on the M10 chassis, the M36B1, built on the Sherman chassis, and the M36B2, built on the M10A1 chassis with a diesel engine. The M36B1 was the most numerous version, and it was built by converting Sherman hulls. The M36B2 was built in smaller numbers, and it had a diesel engine that gave it a longer range. There were no other major variants, although a small number of M36 vehicles were fitted with different radio sets or with additional stowage. The M36’s variants were thus limited, and the type remained a tank destroyer throughout its service.

The M36 in Post-War Service

After the war, M36 Jacksons were supplied to many countries, including France, which used them in Indochina and in Algeria, Yugoslavia, which used them in the 1950s and 1960s, and many others. The M36 also served in Korea with American forces, and it was used in the Korean War in 1950-1953. The M36’s post-war service was extensive, and it shows that the vehicle was regarded as useful even after the war, and that its 90 mm gun was still a capable weapon. The M36 remained in service in some countries into the 1990s, and it was one of the longest-serving American tank destroyers.

The M36 in Yugoslavia and Elsewhere

In Yugoslavia, M36 Jacksons served for many years, and they were used in the Yugoslav wars of the 1990s, where they were among the oldest armoured vehicles in service. The Yugoslav M36s were modified with a diesel engine, and they remained in service until the 1990s. The M36’s service in Yugoslavia is a measure of its longevity, and it shows that a well-designed vehicle can remain useful for decades. The M36 also served in other countries, including Pakistan, Iran, and Taiwan, and it was a widely exported vehicle.

5. Operational History

North-West Europe, 1944-1945

The M36 Jackson entered service in the summer of 1944, and it was first used in North-West Europe after the Normandy landings. M36s served in tank destroyer battalions attached to infantry and armoured divisions, and they were used to provide anti-tank defence and to support infantry attacks. The M36’s 90 mm gun proved effective against German tanks, including the Panther and the Tiger, and its crews praised its firepower. In the fighting in France, in the Netherlands, and in Germany, M36s were used in ambush positions and in direct support, and they were valued for their gun. The M36’s service in 1944-1945 was extensive, and it was one of the most effective American tank destroyers of the war.

The Battle of the Bulge

The most famous action involving the M36 was in the Battle of the Bulge in December 1944, where M36s of the 703rd Tank Destroyer Battalion and other units fought against German Panther and Tiger tanks in the Ardennes. In the Bulge, the M36’s 90 mm gun proved capable of defeating German heavy tanks, and M36 crews reported destroying Panthers and Tigers at long range. The Battle of the Bulge was a severe test for the M36, with cold, snow, and mud, but the vehicle performed well, and it earned a reputation as a capable tank destroyer. The M36’s service in the Bulge was its most important combat, and it demonstrated the value of the 90 mm gun.

Korea and Later Wars

After the war, the M36 served in Korea, where it was used by American forces in the early months of the war in 1950. In Korea, the M36’s 90 mm gun proved effective against the Soviet T-34/85, and the M36 was valued for its firepower. The M36 also served in other conflicts, including the Arab-Israeli wars and the Yugoslav wars, where it remained in service into the 1990s. The M36’s long service, from the Bulge to the Balkans, is a testament to its usefulness, and to the longevity of its 90 mm gun.

6. Performance and Specifications

Strengths on the Battlefield

The strengths of the M36 were its gun, its mobility, and its reliability. The 90 mm gun gave it firepower that was unmatched by any other American vehicle of the war, and it could defeat any German tank. The Sherman chassis gave it good mobility and reliability, and its open-topped turret gave the crew good visibility. The M36 was at its best when it was used as it was intended, in an ambush position, waiting for German tanks to come into range, but it was also effective in direct support. Its gun and its mobility made it a useful vehicle, and its crews valued its firepower.

Weaknesses and Trade-offs

The weaknesses were the open-topped turret, the thin armour on the sides and rear, and the high silhouette. The open top left the crew exposed to artillery and to air attack, and the M36’s height of 3.28 m made it a conspicuous target. The armour, although thicker than the M10’s, was still thin, and the M36 was vulnerable to anti-tank guns. The 90 mm gun was powerful, but it had a slow rate of fire, and the M36 carried only 47 rounds. These weaknesses were the price of mounting a large gun on a Sherman chassis, and they were accepted because the M36 was a tank destroyer, not a battle tank.

How the M36 Compared with Rivals

Compared with the German Jagdpanther, the M36 had a similar gun but a less well-protected hull and an open top, while the German vehicle was enclosed. Compared with the British Archer, the M36 had a more powerful gun and a rotating turret, but it was larger and less well concealed. Compared with the Soviet SU-100, the M36 had a similar gun but a rotating turret, while the Soviet vehicle had a fixed gun and thicker armour. The M36 was thus a capable tank destroyer by the standards of 1944, and it was the best American tank destroyer of the war. Its comparison with its rivals shows its strengths and its limitations.

7. Comparison

Against the M10 Wolverine

The M10 Wolverine and the M36 Jackson were closely related, and the M36 was developed directly from the M10. The M10 had a 3-inch gun, while the M36 had a 90 mm gun, and the M36 was a major advance in firepower. The M10 was faster and had a lower silhouette, but the M36 could defeat German heavy tanks that the M10 could not. The M10 was a good tank destroyer for its time, but the M36 was a better tank destroyer, and it was the M36 that served in the final months of the war and after it. The comparison shows how American tank destroyer design evolved in a short time.

Against the M18 Hellcat

Among American tank destroyers, the closest comparison is with the M18 Hellcat, which entered service in 1944 with a 76 mm gun and a very high speed. The Hellcat was faster than the M36 and had a lower silhouette, but its gun was less powerful. The M36 could defeat the Panther and Tiger at ranges where the Hellcat could not, while the Hellcat could outmanoeuvre German tanks. Both vehicles were designed for the tank destroyer role, and both were successful, but they had different strengths. The M36 was the heavy tank destroyer, and the Hellcat was the fast tank destroyer, and the two types complemented each other.

8. Legacy and Influence

The Most Powerful American Tank Destroyer

The M36 Jackson is remembered as the most powerful American tank destroyer of the Second World War, a vehicle that was well designed for its role and that served for decades after the war in many countries. The type was produced in large numbers, and it served in the Battle of the Bulge, in Korea, and in many other conflicts. The M36’s legacy is as a tank destroyer that could defeat any German tank, and that was valued by its crews for its gun. The M36 remains a landmark in American tank destroyer design, and it is remembered as one of the best American vehicles of the war.

Reputation and Historical Assessment

Historians have generally regarded the M36 as a successful design, a vehicle that was well suited to its role and that was used effectively by American tank destroyer battalions. Its service in the Bulge and in the Rhine crossing is well documented, and its crews are remembered for their skill in using the 90 mm gun. The M36 is also remembered as a symbol of American tank destroyer doctrine, and as a vehicle that was, for a time, the standard heavy tank destroyer of the United States Army and of many other armies. Its reputation has been helped by the survival of examples in museums, and by the work of historians who have studied American tank destroyers in detail.

Lessons for Later Tank Destroyer Design

The lessons of the M36 were clear: a tank destroyer needed a powerful gun, a rotating turret, and a reliable chassis, and it did not need heavy armour if it could avoid being hit. The M36’s successor, the post-war American tank destroyers, incorporated these lessons, and they used more powerful guns on more capable chassis. The M36 also showed that a tank destroyer could be a useful fighting vehicle, not just a specialist, and that its gun was as important as its speed. The M36’s design influenced American tank destroyer design for many years, and its 90 mm gun became a feature of later American tanks.

9. Surviving Examples

Museums in the United States and Europe

A large number of M36 Jackson tank destroyers survive in museums in the United States and in Europe, including the National Armor and Cavalry Museum at Fort Benning, which holds an example in its collection, and the Tank Museum at Bovington in Britain, which also holds an example. The M36 is one of the most widely preserved American tank destroyers of the war, and it is displayed in museums in many countries. The survival of so many M36 vehicles reflects the large production run and the long post-war service, and they are an important part of the military heritage of many countries.

Survivors Abroad and Running Examples

Other M36 vehicles survive outside museums, in private collections, and a number have been restored to running condition. M36 tanks are regularly seen at military vehicle shows, and at least one M36 is maintained in running condition in the United States. The M36’s survival in large numbers reflects its production run and its long service, and it ensures that future generations can see the tank destroyer that served in the Bulge, in Korea, and in the Balkans. The running examples are particularly valuable, because they demonstrate the M36’s mobility and its distinctive engine note.

10. Frequently Asked Questions

How many M36 Jackson tank destroyers were built?
About 2,324 M36, M36B1, and M36B2 tank destroyers were built between 1943 and 1945. Production was carried out by Fisher Body, Massey-Harris, and Montreal Locomotive Works.

What gun did the M36 Jackson carry?
The M36 carried a 90 mm M3 gun in a large, open-topped turret, plus a 12.7 mm M2 Browning machine gun on the turret roof. The 90 mm gun could defeat the Panther and Tiger at normal ranges.

Where did the M36 Jackson first see combat?
The M36 first saw combat in the summer of 1944 in North-West Europe, after the Normandy landings. Its most famous action was in the Battle of the Bulge in December 1944.

Was the M36 Jackson named after Stonewall Jackson?
The name Jackson was unofficial, following the American practice of naming tank destroyers after generals. It was never an official designation, but it became widely used.

What replaced the M36 Jackson?
The M36 was replaced after the war by newer tank destroyers and by main battle tanks, but it remained in service in many countries into the 1990s, notably in Yugoslavia.

Does an M36 Jackson survive today?
Yes. Many M36 vehicles survive in museums in the United States and Europe, including at Fort Benning and at Bovington, and a number are in private collections and in running condition.

11. Sources

• Steven J. Zaloga, M10 and M36 Tank Destroyers 1942-53 (Osprey Publishing, New Vanguard series).
• R. P. Hunnicutt, Sherman: A History of the American Medium Tank (Presidio Press).
• The National Armor and Cavalry Museum, Fort Benning, M36 collection records and vehicle guides.
• Chamberlain, Peter, and Ellis, Chris, British and American Tanks of World War II (Arms and Armour Press).
• David Doyle, American Tank Destroyers (Squadron Signal Publications).
• US War Department, M36 Tank Destroyer technical manual (wartime publication).