After Germany's unconditional surrender on May 8, 1945, the United States, Britain, the Soviet Union and France occupied the country and assumed responsibility for its administration. The commanders in chief exercised supreme authority in their respective zones and acted in concert on questions affecting the whole country. | After Germany's unconditional surrender on May 8, 1945, the United States, Britain, the Soviet Union and France occupied the country and assumed responsibility for its administration. The commanders in chief exercised supreme authority in their respective zones and acted in concert on questions affecting the whole country. |