This collection presents exciting new research on the history of anarchist movements and their relation to organised labour, notably revolutionary syndicalism. Bringing together internationally acknowledged authorities as well as younger researchers, all specialists in their field, it ranges across Europe and from the late nineteenth century to the beginnings of the Cold War. National histories are revisited through transnational perspectives on Britain, France, Italy, Germany, Poland or Europe as a whole evidencing a great wealth of cross-border interactions and reciprocal influences between regions and countries. Emphasis is also placed on individual activist itineraries whether of renowned figures such as Errico Malatesta or of lesser-known yet equally fascinating characters, whose trajectories offer fresh perspectives on the complex interplay of regional and national political cultures, evolving political ideologies, activist networks and the individual.