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The M1A1HA Abrams Tank is the current tank being used by the military. This tank model has been in use since 1980 and serves as the main battle tank of the United States Army and formerly of the United States Marine Corps.

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The first prototypes were built in 1958-1959. The M60 was the first Main Battle Tank (MBT), built in the United States. It was designed around a new concept of general-purpose medium tank, that had the firepower of a heavy tank and a weight and mobility of a medium tank.

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The Abrams X is the newest prototype tank for the military.

It is in development and should be deployed into the military, in the next few years.

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In 1965 and during the cold war the MBT-70 tank was a joint creation between West Germany and the USA. This tank was going to be a new next generation main battle tank for the cold war but the protect was a failure.

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The M48 Patton is an American first generation main battle tank (MBT) introduced in February 1951. It was designed as a replacement for the M26 Pershing, M4 Sherman variants and M46 Pattons used in the Korean War, and as the successor to the M47 Patton.

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Although a good all-over tank, the M47 Patton was used only for a few years, before its replacement by the M48 in 1953 which was really a generation ahead. Declared obsolete in 1957, the impression it left and service time nevertheless far outlasted the fifties under other colors. The Soviet T-54 was modified to face it and the M47 defeated many foreign-built models with success, even taking part in massive tank battles.

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The M46 was designed after the M26 Pershing showed in action some issues that needed to be fixed, but moreover as an attempt to replace also the M4 Sherman. This "universal tank" was expected to fuse both classes in a single package.