The victorious nations had already agreed that the western two thirds of Germany should be divided into military occupation zones . A large part of the country surrounding Berlin , including the eastern part of the city itself , was to be administered as the Soviet occupation zone . Pieck 's years in the Soviet Union had left him genuinely bilingual , and as he entered Berlin as a Soviet officer in the 5th Shock Army , he was working as a simultaneous translator , assigned to Nikolai Berzarin , who later became city commander of Berlin
already agreed
Yalta Conference
Arthur Pieck