After 1921, the FAUD added an "AS" to their name, signifying a full transition from simple syndicalism to anarcho-syndicalism. This also led to further difficulties between the intellectual elites of the FAUD (AS), such as Rudolf Rocker, and the rank and file workers, mostly in the Ruhr region, who were more worried about "bread and butter" issues than anarchist political activities.
After 1921, the FAUD adopted an "AS" to their name, signifying a complete shift from simple syndicalism to anarcho-syndicalism. This also led to disagreements between the intellectual leaders of the FAUD (AS), such as Rudolf Rocker, and the rank-and-file workers in the Ruhr region who were more concerned with practical issues than political activities.