Support allied ground forces through weapons, inherent capabilities, and / or onboard systems.
Design providing enhanced armor protection and firepower over that of lightweight offerings - but lacking the general capabilities of heavier solutions.
MAIN BATTLE TANK
Primary armored ground combat unit of modern armies utilizing speed, protection, and / or firepower to spearhead armored assaults.
Frontline unit used to take direct part in forward operating actions against enemy positions / targets.
Engage armored vehicles of similar form and function.
Special purpose design developed to accomplish an equally-special battlefield role or roles.