Nearing the end of the war, the Soviets deployed a line of fortifications unlike any seen before. Furthermore, any attack upon these lines would be met by heavy armoured counterattacks using tanks of the IS series. The British Army designed and built 18 TOG4 landcruisers, massive vehicles designed to roll through heavily fortified positions, possessing heavier armour and cannon armaments than their precesessors, as well as NBC protection. During the Great Dusk, TOG4 crews were the only ones capable of pushing through the irradiated, chemically scarred, biologically contaminated hellscapes of eastern Europe.