IS-2 Heavy TankWhat do you do when you are told to upgrade an already giant metal monster that took a whole new generation of tank to actually deal with? You make it bigger and make it louder. The IS 2 is that very same beast, made as a competent replacement for the KV series and it was a far better designed machine than its predecessor. It had thick frontal armour and a huge 122mm gun, despite its size; the weight is comparable to that of the German Panther. The IS