The Kuban Cossack Host (Кубанское казачье войско), the administrative and military unit composed of Kuban Cossacks, formed in 1860 and existed until 1918. During the Russian Civil War, the Kuban Cossacks proclaimed the Kuban People's Republic, and played a key role in the southern theatre of the conflict. The Kuban Cossacks suffered heavily during the Soviet policy of decossackization, which between 1917 and 1933 aimed at the elimination of the Cossacks as a separate ethnic, political, and economic entity. The decossackization is frequently described as genocide of the Cossacks. Hence, during the Second World War, Cossacks fought both for the Red Army and against them with the German Wehrmacht. The modern Kuban Cossack Host was re-established in 1990 at the fall of the Soviet Union.