Reichsminister in the context of German revolutions of 1848–49

The Reich Ministry for the Occupied Eastern Territories (RMfdbO; German: Reichsministerium für die besetzten Ostgebiete), commonly known as the Ostministerium, (pronounced [ˈɔstminɪsˌteːʁiʊm] ; "Eastern Ministry") was a ministry of Nazi Germany responsible for occupied territories in the Baltic states and Soviet Union from 1941 to 1945. Alfred Rosenbergserved as Reichsminister with Alfred Meyer as his deputy during its existence.

The Ostministerium was created by Adolf Hitler shortly after the German invasion of the Soviet Union to control the vast areas captured and projected for capture by the Wehrmacht in the Baltic states, Belarus, Ukraine, and Russia. Two Reichskommissariats were established: Ostland and Ukraine, while two more were planned, Moskowien and Kaukasien, but the Wehrmacht never established firm possession of the areas designated and German civilian control never developed there. The Ostministerium was involved in the development and implementation of Generalplan Ost, which fell under its jurisdiction, along with the Reich Commission for the Consolidation of German Nationhood, the Reich Security Main Office, and the SS Race and Settlement Main Office. It was one of the main agencies that oversaw the Holocaust in the Soviet Union.

Hans Michael Frank (23 May 1900 – 16 October 1946) was a German Nazi politician, lawyer and convicted war criminal who served as the head of the General Government, an entity created by Germany on part of the German-occupied Polish lands during the Second World War.

Born in Karlsruhe, Frank was an early member of the German Workers' Party (DAP), the precursor of the Nazi Party (NSDAP). He took part in the failed Beer Hall Putsch, and later became Adolf Hitler's personal legal adviser as well as the lawyer of the NSDAP. In June 1933, he was named as a Reichsleiter (Reich Leader) of the party. In December 1934, Frank joined the Hitler Cabinet as a Reichsminister without portfolio.

Gustav Alfred Julius Meyer (5 October 1891 – 11 April 1945) was a Nazi Party official and politician. He joined the Nazi Party in 1928 and was the Gauleiter of North Westphalia from 1931 to 1945, the Oberpräsident of the Province of Westphalia from 1938 to 1945 and the Reichsstatthalter of Lippe and Schaumburg-Lippe from 1933 to 1945. In 1941 he became the Permanent Deputy to the Reichsminister of the Reich Ministry for the Occupied Eastern Territories. He represented the ministry with Georg Leibbrandt in the January 1942 Wannsee Conference, at which the genocidal Final Solution to the Jewish Question was planned. Near the end of World War II in Europe, Meyer committed suicide in April 1945.