 World War II had a significant impact on German football often leading to the merger of teams weakened in the conflict.In 1943 the wartime side (Kriegsspielgemeinschaft) KSG SpV/48/99 Duisburg was created out of TuS 48/99 and Duisburger SpV.This combined club captured the division title before going out in the second round of the national playoffs to the era's powerhouse FC Schalke 04.