The digital platform “Wer ist Walter?” gathers 100 stories about resistance against Nazism, fascism, occupation and collaboration in Europe during World War II. The focus is on 4 countries that represent different regions and historical and political contexts within Europe: France as occupied and collaborating country in western Europe, Germany as the country that attacked and occupied most of Europe, within which resistance activities also developed, and Bosnia and Herzegovina and Croatia in southeastern Europe, as parts of the Yugoslav space and more specifically of the collaborating Independent State of Croatia between 1941 and 1945.