In the late 1930s, tank design was considerably more advanced than it had been during World War I, and advances continued throughout the war with increases in speed, armour and firepower.
A finais dos anos 1930 o deseño de tanques atopábase considerablemente máis avanzado que na guerra anterior, e os avances continuaron durante toda a guerra con melloras significativas na súa velocidade, blindaxe e armamento.