Tank Armor Became Lighter and More Effective in World War IISloped armor is probably one of the biggest advancements in tank armor since these vehicles were first introduced. Interestingly, Leonardo DaVinci designed his armored car with a sloped design, although this did not inspire the shape of the first tanks, which could best be described as rolling metal boxes.With sloped armor, engineers were able to reduce the armor's thickness and, therefore, the vehicle's weight. Between the implementation of sloped armor, the increase in the quality of steel used in its construction, and the use of composite armor that featured layers of different materials to improve resistance to projectile penetration, tanks got lighter. That brought all the associated benefits of speed, acceleration, agility, and range.Modular armor was also introduced in World War II. It allowed additional armor plating to be added to certain models of tanks when the battlefield required more protection from projectiles, or it could be removed depending on the threat level. If a tank got hit, modular armor could also easily be removed and replaced, allowing vehicles to return to battle quickly.
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