MBT Main Battle Tank
A tracked, heavily armored ground combat vehicle built around a large-caliber main gun, designed to fight other armored vehicles and fortified positions on the direct-fire battlefield.
A main battle tank is a single vehicle type that combines heavy armor, a large-caliber gun and tracked cross-country mobility, built to close with and destroy enemy armor, fortifications and infantry under direct fire.1 The category exists because armies used to field separate light, medium and heavy tank classes, each traded off differently between speed, armor and firepower. Post-war advances in engines, composite armor and gun stabilization let a single chassis do the job of all three, so most militaries now field one primary tank type instead of a family of specialized ones.2
The easiest confusion is with an IFV: both are tracked and armored, but an MBT exists to fight other armor head-on, not to carry troops. Its gun is large, typically 120mm or 125mm smoothbore, its armor is thickest on the frontal arc, and its crew usually numbers three or four depending on whether the design uses an autoloader or a human loader. An IFV’s autocannon, by contrast, is sized to kill lighter vehicles and infantry, not to punch through another tank’s frontal armor.
What changed the category most since the Cold War is armor technology and weight. Composite and explosive reactive armor pushed tanks from roughly 40 tonnes toward 60 to 70 tonnes, which in turn drove demand for more powerful engines and better strategic mobility, since a heavier tank is harder to airlift, bridge and sustain logistically. That weight-versus-protection tradeoff, along with gun caliber, ammunition type and active protection systems, is what an analyst actually evaluates when comparing two MBT designs, not just headline armor thickness.
WeaponSpecs tracks these tradeoffs directly on the tank type page, where gun caliber, combat weight and armor generation are comparable spec fields across every tracked system, and in Western MBT Showdown and the Abrams vs T-90M vs Type 99A comparison, which apply the same criteria to real fielded tanks.
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