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  • MBT-70 (KPz-70) Main Battle Tank (MBT)

    The ill-fated MBT-70 program was a failed joint effort by the United States and West Germany to produce a next generation main battle tank.

     Updated: 5/4/2017; Authored By JR Potts, AUS 173d AB; Content ¬©www.MilitaryFactory.com

    The Cold War in Europe spanned from 1947 into 1991 and the undisputed enemy to the democratic world was the nuclear-armed Soviet Union led by Joseph Stalin. After its strong showing against the German Army in World War 2 (1939-1945), the Soviet military comprised of thousands of proven battle tanks, self-propelled guns, artillery pieces, aircraft and constantly evolving air defense systems. In 1949, the defeated Germans had been divided into an eastern and western section, the east under the control of the communist Soviets. West German authorities and US forces knew the tank force just over the border could destroy them by simple conventional means through massed numbers. The United States maintained a full tank division along the border and this was further backed by three M65 atomic cannons (known as "Atomic Annie") that, if necessary, could be used to answer a large Soviet tank attack from the east. The major drawback of the Annie was in that it took a full day to position and set up for firing. As such, Annie positions could be overrun by a fast-moving enemy before her nuclear projectiles. The Soviets were anything but blind to these weapons and kept a close watch on the Annies. At the time, the US Army's Main Battle Tank (MBT) was the M60 "Patton" and, for the Germans, the Leopard 1 - both tanks had been developed to counter the Russian T54/55 series tanks that were now further strengthened by the arrival of the advanced T-62. Both Germany and the US continued to make upgrades to their Leopard 1 and M60 tanks but inevitably looked forward to an advanced generation of tank to defeat future Soviet tank designs already in development.

    In 1963, the US and Germany pioneered a joint venture project to develop a new Main Battle Tank - the German prototype being designated as the "KPz-70" and the US version to be known as "MBT-70" (for the purposes of this article, both will be collectively referred to as the MBT-70). The goal was to build a superior tank system making use of steel-layered tungsten alloy armor and an inner protective shell comprised of spaced layers of extra hard uniform rolled steel armor. Almost from the start the two design teams faced numerous disagreements as to the number of design features to incorporate. The language barrier was one obvious detrimental factor and the rivalry held between the two teams resulted in very little teamwork and major developmental cost overruns. Despite the same need for a combat tank, the requirements of each military differed based on battlefield theories and tactics. Different engines and main guns were selected by both sides and even the use of metric (or "SAE") measurements were argued about so both would, in fact, be used.

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    MBT-70 (KPz-70) Technical Specifications

    Service Year: 1965
    Type: Main Battle Tank (MBT)
    National Origin: United States
    Manufacturer(s): Not Available - US / West Germany
    Production: 14

    Design (Crew Space, Dimensions, Weight, and Systems)

    Operating Crew: 3
    Length: 29.86 feet (9.10 meters)
    Width: 11.58 feet (3.53 meters)
    Height: 8.60 feet (2.62 meters)

    Operating Weight: 50 tons (45,349 kg; 99,977 lb)

    Nuclear / Biological / Chemical Protection: Yes
    Nightvision Equipment: Yes

    Installed Power and Standard Road Performance

    Engine(s): US: 1 x Continental 12-cylinder air-cooled diesel engine developing 1,470 horsepower; West Germany: 1 x Daimler-Benz MB-873 diesel engine (changed to 1 x MTU diesel engine of 1,500 horsepower output.

    Maximum Road Speed: 43 mph (69.2 km/h)
    Maximum Road Range: 400 miles (644 km)

    Armament and Ammunition

    US Army Version:
    1 x 152mm XM-150E5 main gun / launcher (Shillelagh AT missile-capable).
    1 x 20mm remote-controlled anti-aircraft autocannon.
    1 x 7.62mm general coacial purpose machine gun

    West German Version:
    1 x 120mm main gun
    1 x 20mm remote-controlled anti-aircraft autocannon.
    1 x 7.62mm general coacial purpose machine gun

    42 x 152mm AP/HE/WP projectiles (US Only)
    6 x Shillelagh AT missiles (US Only)
    660 x 20mm ammunition
    2,700 x 7.62mm ammunition

    Global Operators / Customers

    United States (cancelled); West Germany (cancelled)

    Model Variants

    MBT-70 - US Army Designation

    KPz-70 - West German Designation