For a few years after its foundation in 1920 the Communist Party of Great Britain (CPGB) attempted, energetically prompted by the Comintern, to work in solidarity with anticolonial movements in the British Empire. But after the Nazi victory in Germany the Comintern's principal concern was to defend the Soviet Union and the liberal democracies against the threat of fascism. British communists criticized the British Government for failing to defend the Empire against the threat from its imperial rivals. After the entry of the Soviet Union into the war in 1941 they vigorously supported the British war effort, including the defense of Empire. This was not though simply a manifestation of chauvinism. British communists believed that imperialism was suffering a strategic defeat by “progressive” forces and that colonial freedom would follow the defeat of fascism. These chimerical notions were greatly strengthened by the allies' promises of postwar peace, prosperity and international cooperation. In the last year or so of war British communists were clearly worried that these promises would not be redeemed, but nevertheless supported British reassertion of power in such places as Greece, Burma and Malaya. For the great majority of British communists, these were secondary matters when seen in the context of Labour's election victory of 1945 and its promised program of social-imperialist reform.