Tanks are categorized primarily by their balance of , a trade-off often called the " Iron Triangle ". While the early 20th century relied on distinct light, medium, and heavy classes, modern warfare is dominated by the Main Battle Tank (MBT), with light tanks serving specialized niche roles. Main Battle Tanks (MBT)
The MBT is the "universal tank," designed to combine the armor and firepower of former heavy tanks with the speed of medium tanks. Emerging in the post-WWII era, they are the primary armored force for high-intensity, direct-fire combat. Tanks: Main Battle Tanks and Light Tanks