António de Oliveira Salazar
Despite the authoritarian character of the regime, Portugal did not experience the same levels of international isolation as Spain did following World War II. Unlike Spain, Portugal under Salazar was accepted into the Marshall Plan (1947–1948) in return for the aid it gave to the Allies during the final stages of the war. Furthermore, also unlike Spain, it was one of the 12 founding members of the North Atlantic Treaty Organisation (NATO) in 1949, a reflection of Portugal's role as an ally against communism during the Cold War in spite of its status as the only non-democratic founder. In 1950, Portugal joined the European Payments Union and participated in the founding of the European Free Trade Association (EFTA) in 1960 and the Organisation for Economic Co-operation and Development in 1961. It joined the General Agreement on Tariffs and Trade in 1962, and finally, Portugal signed a free trade agreement with the European Economic Community in 1972, still under the auspices of the "Estado Novo".
World War II by country
Nazi Germany, led by Adolf Hitler, was the primary Axis Power in the European Theatre. German forces instigated the war in September 1939 by invading Poland. Poland was divided with the Soviet Union. The Phony War ensued and in the spring of 1940 German forces invaded and conquered Denmark, Norway, France, Belgium, Luxembourg and the Netherlands. Attempts to subdue the United Kingdom by air in the summer of 1940 failed and a planned invasion was called off. In the summer of 1941 Germany turned its forces east by invading the Soviet Union. The Eastern Front became the main theatre of war for the Germans. The invasion of the USSR had been delayed by campaigns in Greece and Yugoslavia, aimed at assisting floundering Italian forces. The Afrika Korps was similarly dispatched to the Western Desert to assist struggling Italian forces there, and German forces grew to an entire army group. Major defeats at Stalingrad in February 1943 and the destruction of Axis forces in North Africa shortly after are commonly thought to be the war's turning points. German forces fought on Sicily, and when Italy switched sides, German forces seized power, fighting a successful withdrawal and diverting Allied forces from Northwest Europe. Severe losses at Kursk in the summer of 1943 and during the Soviet summer offensives of 1944 shattered German fighting power, and Allied landings in Normandy and Southern France forced the Germans to fight on several fronts simultaneously. The surrender of the German forces between 4 May and 8 May 1945, signaled the end of the war in Europe.