The Heavy Tank is one of the most common units in most battles, but is by no means always the most efficient. While no unit has stronger armor or a more powerful main cannon, the high cost, low movement speed and inefficiency against enemy infantry ensures that this modern main battle tank will not completely replace the older, cheaper tanks on the battlefields. For tank hunting, however, the Heavy Tank remains the tank commander’s best friend. USSR: T-80U USA: M1A1 Abrams NATO: Leopard 2A4