How a failed joint tank project birthed the most iconic American battle tank

Countries & Cities · Published 29 September 2026 Swipe more like this →

In short: The M1 Abrams began as a troubled collaboration with West Germany that nearly collapsed under budget overruns and design disputes. Yet, from the ashes of the canceled MBT-70, the U.S. Army forged a machine that would dominate modern armored warfare for decades, proving its worth from the Gulf War to today.

The M1 Abrams story is rooted in the 1963 partnership between the U.S. Army and the West German Bundeswehr to design a shared main battle tank. The resulting MBT-70 was technologically ambitious, featuring an autoloader and a driver positioned in the turret, but the collaboration was plagued by cultural clashes and ballooning costs. By 1970, the partnership dissolved, and subsequent American efforts like the XM803 were also canceled due to financial concerns. The Pentagon eventually shifted its strategy, requiring contractors to competitively bid on designs rather than government-led projects, leading to the 1973 request for the XM1.

Chrysler and General Motors emerged as the primary competitors. While GM's prototype initially performed better in testing, the Pentagon's insistence on a gas turbine engine—a requirement pushed by Defense Secretary Donald Rumsfeld—effectively favored Chrysler. In 1976, the $4.9 billion development contract was awarded to Chrysler. The tank's design was defined by the integration of British-developed Chobham composite armor, which provided exceptional protection against shaped charges, and a 105 mm M68 gun. The tank entered service in 1980, marking a new era for U.S. armored forces.

The Abrams proved its battlefield superiority during the 1991 Gulf War, where its advanced fire control and range allowed it to engage Soviet-designed Iraqi tanks from distances beyond their reach. No M1 was lost to enemy tank fire during the conflict. Over the years, the platform has seen constant evolution, transitioning from the original M1 to the M1A1 and M1A2 variants. These upgrades introduced the 120 mm M256 smoothbore gun, depleted uranium armor, and sophisticated digital communications. Despite early criticism regarding fuel consumption and cost, the M1 series remains the backbone of U.S. armored operations, with ongoing improvements to its lethality and protection ensuring its relevance in modern conflicts.

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