 Complete the following phrase:  On 3 September 1939, Prime Minister Menzies announced Australias declaration of war on Nazi Germany. Australia had entered World War II, following the Nazi invasion of Poland. The Labor Party declined to enter a war cabinet led by Menzies, though Curtin offered co-operation  though not to the extent of supporting conscription for overseas service. The Labor Party experienced a split along pro and anti Communist lines over policy towards the Soviet Union for its 