The cardinal error of the Germans who opposed Nazism was their failure to unite against it. At the crest of their popular strength, in July 1932, the National Socialists had attained but 37 per cent of the vote. But the 63 per cent of the German people who expressed their opposition to Hitler were much too divided and shortsighted to combine against a common danger which they must have known would overwhelm them unless they united, however temporarily, to stamp it out.