besetztes nachkriegsösterreich

Much like post-war Germany, Austria was—after a column of Soviet forces crossed into the Burgenland in April of that year and established a provisional government with support of Joseph Stalin though absent any consultation from the Western powers—from this day in 1945 when it was decided at the London Conference that it shall be jointly occupied (rather than being split into constituent nations) by Great Britain, France, the Soviet Union and the US through 1955—see previously here and here, see also. By 9 July, the Allies had negotiated the details and decided on the borders of their zones and sectors, Vienna being shared amongst all with its historic centre being governed by a different power each month on a rotational basis.