After the war he was member of the Allied Control Commission, restoring civil authority in Germany.
He made an attempt to start commercial air service between Vienna and Budapest, but was closed down by the Allied Control Commission.
It also made clear that The Allied Control Commission would have its seat in Bucharest.
After the war he was appointed to a military court of the Allied Control Commission, which administered occupied Germany.
He later served as chief judge of the Allied Control Commission's supreme court from 1947 to 1950.
Alexander in 1919 served with the Allied Control Commission in Poland.
In 1946, after serving with the Allied Control Commission, he joined the British Foreign Office.
He became a Russian interpreter with the Allied Control Commission in Germany during the period 1947-49.
He ended his service as a major with the Allied Control Commission in post-war Germany.
The town of Kazanlak was well suited, for it stayed away from the Allied Control Commission.