<prompt> Bhala okuqhubekayo kwalesi sigaba - Umlobi wezindaba uWilli Eichler waphumelela uNelson njengomongameli we-ISK ngemva kokufa kwakhe. U-Eichler noSpecht bobabili bazosayina u-1932 I-Urgent Call for Unity Dringender Appell für die Einheit ephephandabeni elisemthethweni le-ISK, Der Funke. Lalibiza iSocial Democratic Party SPD yaseJalimane neCommunist Party KPD ukuba bakhe umzabalazo wobumbano ongakwesobunxele ukuze kunqandwe amaNazi. Ngemva kokunqotshwa kwamaNazi ngo-1945  <response>: , i-ISK yahlanganiswa ne-SPD ngesivumelwano esenziwa ngomhlaka-10 Disemba 1945, phakathi kukasihlalo we-ISK uWill Eichler kanye nokasihlalo we-SPD uKurt Schumacher. Nokho, i-ISK yaqhubeka isebenza ekumelaneni nobuNazi. Iqembu laseBrithani le-ISK lasungulwa lasukela ngawo-1920 kuya ku-1950 e-United Kingdom elibizwa nge-Socialist Vanguard Group. 