The rise of Nazi Germany in the 1930s led to a precarious situation for the Austrian Rothschilds under the Annexation of Austria in 1937 when the family was pressured to sell its banking operations at a fraction of its real worth. While other Rothschilds had escaped the Nazis, Louis Rothschild was imprisoned for a year and only released after a substantial ransom was paid by his family. After Louis was allowed to leave the country in March 1939, the Nazis placed the firm of S M von Rothschild under compulsory administration. Nazi officers and senior staff from Austrian museums also emptied the Rothschild family estates of all their valuables. Following the war, the Austrian Rothschilds were unable to reclaim much of their former assets and properties.