The March Action (German "März Aktion" or "Märzkämpfe in Mitteldeutschland" ("The March battles in Central Germany")[1] was a 1921 workers revolt, led by the Communist Party of Germany (KPD), the Communist Workers' Party of Germany (KAPD), and other radical left-wing organisations. It took place in the industrial regions located in Halle, Leuna, Merseburg, and Mansfeld.[1] The revolt ended in defeat for the workers, and a weakening of contemporary communist influence in Germany.