Light Tank is a tank variant initially designed for rapid movement and now primarily employed in the reconnaissance role. Early light tanks were generally armed and armored similar to an Armoured Car but used tracks in order to provide better cross-country mobility.
The fast light tank was a major feature of the pre-World War II buildup, where it was expected they would be used to exploit breakthroughs in enemy lines created by slower, heavier tanks. Numerous small tank designs and Tankettes were developed during this period and known under a variety of names, including the Combat Car.
In UK, they are classified into Light tanks and Cruiser tanks. They are different from their roles in the battlefield and their tactics against an enemy force.