Reich Ministry for the Occupied Eastern Territories in the context of "Reichskommissariat Ostland"

The Reichskommissariat Ukraine (RKU; lit. 'Reich Commissariat of Ukraine') was an administrative entity of the Reich Ministry for the Occupied Eastern Territories of Nazi Germany from 1941 to 1944. It served as the German civilian occupation regime in the Ukrainian SSR and parts of the Byelorussian SSR, Russian SFSR, and eastern Poland during the Eastern Front of World War II.

Reichskommissariat Ukraine was established after the early success of the Wehrmacht's Operation Barbarossa for territory under the military administration of Army Group South Rear Area. The German civil administration was based in Rovno (Rivne) with Erich Koch serving as the only Reichskommissar during its existence.

Alfred Ernst Rosenberg (12 January [O.S. 31 December 1892] 1893 – 16 October 1946) was a Baltic German Nazi theorist, theologian, ideologue and convicted war criminal. Rosenberg was first introduced to Adolf Hitler by Dietrich Eckart, and he held several important posts in the Nazi government. He was the head of the NSDAP Office of Foreign Affairs during the entire rule of Nazi Germany (1933–1945), and led Amt Rosenberg ("Rosenberg's bureau"), an official Nazi body for cultural policy and surveillance, between 1934 and 1945. During World War II, Rosenberg was the head of the Reich Ministry for the Occupied Eastern Territories (1941–1945). He helped direct the mass murder of the Slavs. After the war, he was convicted of crimes against peace; planning, initiating and waging wars of aggression; war crimes; and crimes against humanity at the Nuremberg trials in 1946. He was sentenced to death by hanging and executed on 16 October 1946.

The author of a seminal work of Nazi ideology, The Myth of the Twentieth Century (1930), Rosenberg is considered one of the main authors of key Nazi ideological creeds, including its racial theory and its hatred of the Jewish people, the need for Lebensraum, abrogation of the Treaty of Versailles, and opposition to what was considered "degenerate" modern art. He was also known for his hatred and rejection of what he regarded as "negative" Christianity; however, he played an important role in the development of German nationalist Positive Christianity, which rejected the Old Testament.

Generalbezirk Estland (German for "General District Estonia"; Estonian: Eesti kindralkomissariaat) was an administrative subdivision of the Reichskommissariat Ostland of Nazi Germany that covered Estonia from 1941 to 1944. It served as the Nazi civilian administration for the German occupation of Estonia during World War II, and supervised the collaborationist Estonian Self-Administration of Hjalmar Mäe.

Karl-Siegmund Litzmann was the only Generalkommissar of Generalbezirk Estland during its existence.

Generalbezirk Lettland (German for "General District Latvia"; Latvian: Latvijas ģenerālapgabals) was an administrative subdivision of the Reichskommissariat Ostland of Nazi Germany that covered Latvia from 1941 to 1944. It served as the Nazi civilian administration for the German occupation of Latvia during World War II, and supervised the collaborationist Latvian Self-Administration of Oskars Dankers.

Otto-Heinrich Drechsler was the only Generalkommissar of Generalbezirk Lettland during its existence.

Generalbezirk Litauen (Lithuanian: Lietuvos generalinė sritis, lit. 'General District Lithuania') was an administrative subdivision of the Reichskommissariat Ostland of Nazi Germany that covered Lithuania from 1941 to 1944. It served as the Nazi civilian administration for the German occupation of Lithuania during World War II.

Adrian von Renteln was the only Generalkommissar of Generalbezirk Litauen during its existence.

Generalbezirk Weißruthenien (Belarusian: Генеральная акруга Беларусь; lit. 'General District White Ruthenia') was an administrative subdivision of the Reichskommissariat Ostland of Nazi Germany that covered western Belarus from 1941 to 1944. It served as the Nazi civilian administration for the German occupation of Belarus during World War II, and supervised the collaborationist Belarusian Central Council of Radasłaŭ Astroŭski.

Wilhelm Kube was the Generalkommissar of Generalbezirk Weißruthenien until his death in 1943. Kube was succeeded by SS and Police Leader Curt von Gottberg who served as Generalkommissar for the remainder of its existence.