Germany has unveiled a new main battle tank—its first in more than 40 years. The KF51, also known as the “Panther,” is bristling with new technology, including a larger main gun, a digital computer ...

While the American-made M1 Abrams, German-made Leopard and British-made Challenger are likely the most recognizable tank names today, South Korea’s K2 Black Panther should not be discounted. In fact, ...