In the Occupied Europe, many people paid with their lives to defeat Nazi Germany. Their bravery and sacrifice also played a positive role in promoting the final victory of the Allies.
By their very nature, many of the war were covert activities, so there is little historical record, and the actions of many unsung heroes cannot be quantified. In the occupied areas under Nazi rule, those who resisted only slightly were usually sent to concentration camps for no apparent reason, either tortured to death or executed. Nazi retaliation against rebel groups was also very common. But as the possibility of Defeat by Germany became more and more likely, many people in the occupied territories participated in the War of Resistance.
At the same time, many western Allied organizations also came to aid the War of Resistance. The U.S. Strategic Intelligence Agency (OSS) was not only involved in intelligence gathering, but also provided assistance in military resistance. The British, on the other hand, divided these functions into the British Secret Intelligence Service, mi6 (MI6) and the Special Operations Committee in Time of War ("SOE"). Britain's MI9 and America's MIS-X have helped people who want to escape from the Nazi clutches.
Both the Strategic Intelligence Service and the Special Operations Committee had trained a number of agents to be responsible for intelligence work in the occupied countries. It also has a wide technical division of labor, mainly responsible for the design and manufacture of special weapons, forged identity documents and other tasks.
In Yugoslavia, the struggle against the Nazis was the most brutal and intensive. Later in the war, the guerrilla movement, led by Joseph Broz Tito, was carried out with the support of the Soviet Union and the West, and finally liberated the country from the Germans in a bloody struggle that lasted four years. But Yugoslavia also had a death toll of 1 million during the war.
The struggle against the Nazis intensified as Germany was about to lose. In 1944, a plan was drawn up to accompany operations in Normandy. This program played an extremely important role in assisting the Allied forces in their battles with the Germans.