Heavy tank
The Char 2C was one of the largest tanks ever produced. At the start of World War II, France and the Soviet Union were the only countries to have inventories of heavy tanks, such as the Char B1, T-35, and KV-1. The Matilda II was designed under the British infantry tank concept which is similar to the heavy tank having thick armor and weighing more than their other tanks. It’s usually separate because they have less firepower with their cruiser tanks (comparable to mediums) at the time having the same main armament but more machine guns. Later war examples were the German Tiger I and II, as well as the Soviet IS series. Note that "heavy" versus "medium" is more a question of tactical roles than weight; the Panther, for example, was a "medium" tank that outweighed most Allied "heavy" tanks.
Gulf War
The ground campaign consisted of three or possibly four of the largest tank battles in American military history. The battles at 73 Easting, Norfolk, and Medina Ridge are well noted for their historic significance. Some consider the battle of Medina Ridge the largest tank battle of the war. The U.S. Marine Corps also fought the biggest tank battle in its history at Kuwait International Airport. The U.S. 3rd Armored Division also fought a significant battle at Objective Dorset not far from where the battle of Norfolk was taking place. The U.S. 3rd Armored Division destroyed approximately 300 enemy combat vehicles during this particular encounter with Iraqi forces. The Iraqis suffered the loss of over 3,000 tanks and over 2,000 other combat vehicles during these battles against the American-led coalition.