World War II transformed tank warfare through massive innovation in armor, firepower, and mobility. The U.S. M4 Sherman became the reliable Allied backbone, produced in vast numbers and adaptable to many roles. Germany’s Tiger I, Tiger II, and Panther tanks dominated with heavy armor and powerful guns. The U.K. Churchill offered a balance of durability and versatility, while the Soviet T-34 excelled with sloped armor and mobility, proving decisive on the Eastern Front.