After the Second World War, Mildenstein continued to live in West Germany, where he joined the Free Democratic Party and was elected to its Press Committee.

Born in 1902 in Prague, then part of Austria-Hungary, Mildenstein belonged to the lowest tier of the Austrian nobility and was brought up as a Roman Catholic.

[6] They spent a month together in Palestine,[2][7] and Mildenstein began to write a series of articles for Der Angriff, a Nazi Party newspaper in Berlin, founded by Joseph Goebbels in 1927.

[6] In August 1933 Hitler's government and German Zionists entered into the Haavara Agreement, which encouraged emigration by allowing Jews to transfer property and funds from Germany to Palestine.

[9] On 24 May 1934, the Judenreferat, then led by Walter Ilges, sent Reinhard Heydrich, the new Director of the Gestapo, a memorandum stating that the only answer to the Jewish Question was the emigration of all Jews from Germany.

[11] Between 9 September and 9 October 1934, Der Angriff published a series of twelve pro-Zionist reports by Mildenstein, entitled A Nazi Goes to Palestine, in honour of which the newspaper issued a commemorative medallion, cast with the swastika on one side and the Star of David on the other.

SS officials were even instructed to encourage the activities of the Zionists within the Jewish community, who were to be favoured over the assimilationists, said to be the real danger to Nazism.

[17] In the summer of 1935, then holding the rank of SS-Untersturmführer, Mildenstein attended the 19th Congress of the Zionist Organization in Lucerne, Switzerland, as an observer attached to the German Jewish delegation.

[18] Mildenstein's pro-Zionist line was overtaken by events, and after a dispute with Heydrich in 1936 he was removed from his post and transferred to the Foreign Ministry's press department.

His departure from the SD also saw a shift in SS policy, marked by the publication of a pamphlet written by Eichmann warning of the dangers of a strong Jewish state in the Middle East.

[21][22] As Germany moved into the Second World War, Mildenstein continued to write propaganda articles and books, including "Around the Burning Land of the Jordan" (1938)[23] and "The Middle East Seen from the Roadside" (1941).

In December 1956, a CIA report from Cairo confirmed that he had been employed by the Egyptian government of Gamal Abdul Nasser to work for its Voice of the Arabs radio station.