"All this would change when Adolf Hitler came to power in 1933 because his deductions from the war differed in important respects from those of others. War had been an intended and even a preferred part of National Socialist policy from the beginning, not so much out of a preference for fighting for its own sake, but from the entirely accurate conviction that the aim of German expansion could be secured only by war. Germany was to seize the agricultural land needed to feed its population, a population that would grow further as it obtained such land, and which would accordingly expand its needs and its lands into the indefinite future. This crude Social Darwinism, in which racial groups fought for land which could provide the means of subsistence, expelling or exterminating but never assimilating other groups, was derived from a view of history as deterministic as that of Marx, but substituting race for class as the key to understanding.’ Its application had internal as well as external implications."