Editing Tank classification (section)

===Modern===
Light tanks, such as the [[PT-76]], continue to play an important role in [[tank warfare]], however many are being replaced with [[Infantry fighting vehicle|IFVs]] and [[Armoured car (military)|armoured cars]]. The light tank is still more used than [[main battle tank]]s in many armies for various reasons: financial, terrain-related (muddy landscape and dense foliage), or doctrinal dependence on airborne divisions.  Many light vehicles, such as the British [[Combat Vehicle Reconnaissance (Tracked)]] series ([[FV101 Scorpion]], [[FV107 Scimitar]]) are used primarily for reconnaissance, but retain the tank capabilities.{{citation needed|date=August 2017}}

Medium and Heavy tanks were used in the early stages of the cold war, but have gradually been phased out by the multi-role Main Battle Tank.  Heavy tanks grew to the point of being logistically problematic, such as the Conqueror and IS-3, while the MBT became capable of filling their battlefield role in a comparatively Medium form-factor.  In most cases, the Heavy tanks grew so large that they could not be transported by rail, and could not be supported by common bridges.