The Roter Frontkämpferbund (German: [ˈʁoːtɐ ˈfʁɔntˌkɛmpfɐbʊnt], "Alliance of Red Front-Fighters"), usually called Rotfrontkämpferbund, abbreviated RFB, was a German paramilitary organization affiliated with the Communist Party of Germany during the Weimar Republic (KPD).[1] It was officially a non-partisan and legally registered association.[2] The organisation was banned as extremist by the governing social democrats in 1929.[3]