Tank

Tank, heavily armoured track-laying, or treaded, military vehicle, with cross-country mobility and road speeds up to 97 km/h (60 mph). Tanks are classified as light, medium, and heavy. They range in weight from approximately 14 to 54 tonnes, have at least 15 cm (6 in) of armour plate, and mount cannons ranging from 75 mm to 122 mm in the tank's turret. The turret is a structure on top of the tank that can rotate 360 degrees, enabling the tank to fire in any direction. In addition, tanks often have both light and heavy machine-guns. Light tanks are used for reconnaissance; heavier tanks are used primarily to penetrate or flank enemy defences.