Medium tank (Tiberian Dawn)

GWWII
The medium tank was first implemented during the Great World War 2 to counter the ever increasing hordes of Soviet armor. Although the Soviet's lightest tank was still stronger than this tank, it did even the odds somewhat in that the medium tank could be far better mass produced than any Soviet tank.

TWI
The Medium Tank of the First Tiberium War was most likely the decendant of Allied Main Battle Tanks of the '70s and '80s. The GDI medium tank was weak against a squad of 5 Rocket Infantry or a squad of 2 Light Tanks. It was heavily armored, which made it fairly slow (although faster than the Mammoth).