Ku sii wad qodobkan - Wariye Willi Eichler oo ka mid ah suxufiyiinta ayaa ku guuleystay Nelson jagada madaxweynaha ISK kadib geeridiisa. Eichler iyo Specht labaduba waxay saxiixi doonaan 1932 "Wicitaan Degdeg ah oo Midnimo" ("Dringender Appell für die Einheit") ee wargeyska rasmiga ah ee ISK, "Der Funke". Waxay ku baaqday in xisbiyada Social Democratic Party (SPD) iyo Communist Party (KPD) ee Jarmalka ay abuuraan garab bidix oo mideysan si ay uga hortagaan Naasiyiinta. Guuldaradii Naasiyiinta ka dib 1945
, ISK waxay ku biireen SPD heshiiskii la gaaray 10kii Diseembar 1945, oo u dhexeeyay guddoomiyihii ISK (Will Eichler) iyo guddoomiyihii SPD (Kurt Schumacher). Si kastaba ha noqotee, ISK waxay sii waday inay si firfircoon uga qayb gasho iska caabinta Nazisimka. Xubinta Ingiriiska ee ISK waxaa la abuuray (oo soconayay 1920s ilaa 1950s) Boqortooyada Ingiriiska oo loo yaqaan Kooxda Socialist Vanguard Group.