Portugal during World War II
Upon the start of World War II in 1939, the Portuguese Government announced on 1 September that the 600-year-old Anglo-Portuguese Alliance remained intact, but that since the British did not seek Portuguese assistance, Portugal was free to remain neutral in the war and would do so. In an aide-mémoire of 5 September 1939, the British Government confirmed the understanding. As Hitler's occupation swept across Europe, neutral Portugal became one of the Continent's last escape routes. Portugal managed to remain neutral throughout the war despite extraordinary pressures from both sides, notably over the strategically located Azores islands and over the wolfram (tungsten) trade.
Brazil
Foreign policy during Vargas years was marked by the antecedents and World War II. Brazil remained neutral until August 1942, when the country entered on the allied side, after suffering retaliation by Nazi Germany and Fascist Italy, in a strategic dispute over the South Atlantic. In addition to its participation in the battle of the Atlantic, Brazil also sent an expeditionary force to fight in the Italian campaign.