(center) in
Kiev, Reichskommissariat Ukraine At the commencement of World War II on 1 September 1939, Koch was appointed
Reich Defense Commissioner (
Reichsverteidigungskommissar) for
Wehrkreis (Military District) I, which comprised East Prussia. On 26 October 1939, after the end of the
Invasion of Poland, the territory of his Gau was adjusted.
Regierungsbezirk West Prussia was transferred from East Prussia to the new Reichsgau Westpreußen, later renamed
Reichsgau Danzig-West Prussia. East Prussia was compensated with
Regierungsbezirk Zichenau (previously Ciechanów). These new areas lay approximately between the rivers
Vistula and
Narew. In March 1940
Theodor Schieder, who was director in charge of Regional Office for Postwar History (
Landesstelle fur Nachkriegsgeschichte), presented Gauleiter Erich Koch with a detailed plan regarding studies of territories annexed to East Prussia; Koch himself wanted to know political, social and ethnic conditions in those areas. Schieder in return sent two reports to Koch, including a population inventory conducted at the end of 19th century of the area in question, which was most relevant to Nazi policies of extermination and settlement, and provided basis for segregation of Jewish and "Slavic" spouses from ethnic Germans in the German
Volksliste. Soon after the
invasion of the Soviet Union, Koch was appointed "civil commissioner" (
Zivilkommissar) on 1 August 1941, and later as Chief of Civil Administration in
Bezirk Bialystok. In 1942,
Gauleiter Erich Koch expressed thanks to
Theodor Schieder for his help in Nazi operations in annexed Poland writing: "As a director of 'Landesstelle Ostpreußen für Nachkriegsgeschichte' you have provided material that provided significant service in our fight against Poles and continues to help us in establishing new order today in Regierungsbezirke Zichenau and Bialystok." On 1 September 1941, Koch became
Reichskommissar of
Reichskommissariat Ukraine with control of the
Gestapo and the
uniformed police. His domain now extended from the
Baltic to the
Black Sea; it comprised ethnic German, Polish, Belarus and Ukrainian areas. As
Reichskommissar he had full authority in his realm, which led to conflict with other elements of the Nazi bureaucracy.
Alfred Rosenberg,
Reich Minister for the Occupied Eastern Territories (
Reichsministerium für die besetzten Ostgebiete), expressed his disapproval of Koch's autonomous actions to Hitler in December 1941. Koch's first act as
Reichskommissar was to close local schools, declaring that "Ukraine children need no schools. What they'll have to learn will be taught them by their German masters." Koch worked together with the General Plenipotentiary for Labour Deployment (
Generalbevollmächtigter für den Arbeitseinsatz)
Fritz Sauckel in providing the Reich with forced labor. He was also involved in the
persecution of Polish and Ukrainian Jews. Due to his brutal actions, Nazi rule in Ukraine was disturbed by a growing number of
partisan uprisings. by escaping through this Baltic Sea port on 23 April 1945 on the
icebreaker Ostpreußen. From Pillau through
Hel Peninsula,
Rügen, and
Copenhagen he arrived at
Flensburg, where he hid himself after unsuccessfully demanding that a
U-boat take him to South America. He was captured by British forces in
Hamburg in May 1949. ==Trial and imprisonment==