Church. During World War II, however, it was allowed greater autonomy in running its affairs in return for calling its members to support the war effort, although it did not achieve the kind of accommodation with the authorities that the Russian Orthodox Church had. The government reimposed tight control over it after the war. Out of some 2,100 churches in 1917, only 200 were still open in the 1980s, and it was forbidden to serve its adherents outside the Georgian Republic. In many cases, the government forced the Georgian Orthodox Church to conduct services in Old Church Slavonic instead of in the Georgian language. Policy towards Catholicism and Protestantism The Soviet government's policies toward the Catholic Church were strongly influenced by Soviet Catholics' recognition of an outside authority as head of their church. As a result of World War II, millions of Catholics (including Greco-Catholics) became Soviet citizens and were subjected to new repression. Also, in the three republics where most of the Catholics lived, the Lithuanian SSR, the Byelorussian SSR and the Ukrainian SSR, Catholicism and nationalism were closely linked. Although the Roman Catholic Church was tolerated in Lithuania, large numbers of the clergy were imprisoned, many seminaries were closed, and police agents infiltrated the remainder. The anti-Catholic campaign in Lithuania abated after Stalin's death, but harsh measures against the church were resumed in 1957 and continued through the Brezhnev era. Soviet policy was particularly harsh toward the Ukrainian Greek-Catholic Church. Ukrainian Greek-Catholics came under Soviet rule in 1939, when western Ukraine was incorporated into the Soviet Union as part of the Nazi-Soviet Nonaggression Pact. Although the Ukrainian Greek Catholic Church was permitted to function, it was almost immediately subjected to intense harassment. Retreating before the German army in 1941, Soviet authorities arrested large numbers of Ukrainian Greek Catholic priests, who were either killed or deported to Siberia. After the Red Army reoccupied western Ukraine in 1944, the Soviet state liquidated the Ukrainian Greek-Catholic Church by arresting its metropolitan, all of its bishops, hundreds of clergy, and the more active church members, killing some and sending the rest to labor camps. At the same time, Soviet authorities forced the remaining clergy to abrogate the union with Rome and subordinate themselves to the Russian Orthodox Church. Before World War II, there were fewer Protestants in the Soviet Union than adherents of other faiths, but they showed remarkable growth since then.