Cika wannan jumla: A ranar 9 ga Afrilu, 1940
Jamus ta mamaye Denmark. A cikin watanni 14 na farko na mamayar Jamus, an ba DKP damar ci gaba da aiki bisa doka, amma 'yan gurguzu sama da 300, gami da' yan majalisa, 'yan sandan Denmark ne suka tsare su a ranar 22 ga Yuni, 1941, bayan mamayar Jamus ga Tarayyar Soviet. Daga baya an haramta jam'iyyar lokacin da aka sanya hannu kan Dokar Kwaminisanci wata biyu bayan haka a ranar 22 ga Agusta 1941. An kafa gwamnatin hadin kan kasa ta sauran manyan jam'iyyun, wadanda suka hada kai da Jamusawa, gami da haramta DKP.