Zichenau
A Nazi German administrative region established in annexed Polish territory during the Second World War and dissolved in 1945.
Last updated August 31, 2026
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Overview
Zichenau, formally Regierungsbezirk Zichenau, was an administrative region created by Nazi Germany in territory seized from Poland during the Second World War. It was established on 26 October 1939, after Germany annexed large areas of occupied Polish territory, and was incorporated into the German Province of East Prussia. The regional administrative seat was Zichenau, the German name for the Polish city of Ciechanów. The area was also described in German usage as South East Prussia, although that label could be used inconsistently and was sometimes applied to the neighboring Białystok District, which was attached to East Prussia without being formally incorporated into it. The region covered approximately 12,000 square kilometers and had a population of about 895,000 at the time of its creation. The population was overwhelmingly Polish, with approximately 800,000 Poles, alongside around 80,000 Jews and 15,000 Germans. Its establishment formed part of the Nazi occupation regime's effort to reorganize, Germanize, exploit and politically repress territories taken from the Polish state. German authorities replaced Polish administrative structures, imposed German control over public life and used the region as a source of labor and resources for the wartime German economy. Occupation policies in Zichenau were exceptionally coercive. Polish residents were subjected to arrests, roundups, executions, expulsions and deportations. People were sent to forced labor sites and concentration camps, including adolescents. The region was affected by the Intelligenzaktion, the campaign against Polish intellectual, civic and professional elites, and by other Nazi mass-crime programs, including actions associated with Aktion T4. German authorities operated prisons and jails in Ciechanów, Mława, Ostrołęka, Płock, Płońsk, Przasnysz, Pułtusk and Sierpc. The occupation also targeted Polish civil society and cultural institutions. Polish associations, cooperatives, educational and civic institutions, and the Polish press were closed or suppressed. Libraries, museums and archives were looted, destroyed or placed under German control. Industrial infrastructure was likewise exploited, damaged or dismantled according to German wartime priorities. German labor offices in Ciechanów, Ostrołęka and Płock recruited and deported workers. People from the region consequently made up a substantial share of Polish forced laborers employed in East Prussia. Administratively, the region was divided into nine rural districts corresponding broadly to the areas around Maków Mazowiecki, Mława, Pułtusk, Płońsk, Przasnysz, Ostrołęka, Płock, Sierpc and Ciechanów. The German occupation administration ended in 1945 as the Red Army advanced through East Prussia and the German forces withdrew or were defeated. Regierungsbezirk Zichenau was dissolved, and its territory was restored to Poland. The entity is therefore a historical administrative unit rather than a commercial brand, product or continuing organization.
History
Regierungsbezirk Zichenau was created by Nazi Germany on 26 October 1939 from Polish territory annexed after the invasion and partition of Poland. The new administrative region was attached to the Province of East Prussia, with Ciechanów renamed Zichenau for official German use and serving as the regional capital. German authorities also used the expression South East Prussia for the area, though the terminology was not always consistent and could overlap rhetorically with the separately administered Białystok District. The region covered about 12,000 square kilometers and contained roughly 895,000 inhabitants. Its population was predominantly Polish, numbering approximately 800,000 people, with Jewish and German minorities of about 80,000 and 15,000 respectively. The incorporation of the territory was part of a broader Nazi project to destroy Polish sovereignty, remove Polish political and cultural institutions, exploit the population economically and reshape the annexed territories along racial and colonial lines. German rule involved systematic repression. Polish civilians were arrested in mass operations, rounded up, deported for forced labor, sent to concentration camps and subjected to executions and massacres. The region was affected by the Intelligenzaktion, which targeted intellectuals, professionals, clergy and other perceived leaders of Polish society. Nazi occupation policy also included actions connected with Aktion T4 and other programs of persecution and murder. Prisons and detention facilities operated in the principal towns, including Ciechanów, Mława, Ostrołęka, Płock, Płońsk, Przasnysz, Pułtusk and Sierpc. The occupation administration attacked the institutional foundations of Polish society. Associations, cooperatives and other Polish organizations were dissolved, while the Polish press was suppressed. Libraries, museums and archives were looted or destroyed, and industrial facilities were taken over, stripped or redirected for German purposes. German labor offices established in Ciechanów, Ostrołęka and Płock organized the recruitment and deportation of Polish workers. Residents of the region consequently formed a major component of the Polish forced-labor population employed in East Prussia. The administrative unit consisted of nine rural districts: Mackeim, corresponding to Maków Mazowiecki; Mielau, corresponding to Mława; Ostenburg, corresponding to Pułtusk; Plöhnen, corresponding to Płońsk; Praschnitz, corresponding to Przasnysz; Scharfenwiese, corresponding to Ostrołęka; Schröttersburg, corresponding to Płock; Sichelberg, corresponding to Sierpc; and Zichenau, corresponding to Ciechanów. Regierungsbezirk Zichenau ceased to exist in 1945 during the Soviet offensive that overran East Prussia. With the collapse of German occupation, the territory was returned to Polish administration. The region's history is therefore principally associated with annexation, occupation, forced German administration and crimes against the Polish and Jewish populations, rather than with commercial activity or brand development.
- 1945
Dissolution and restoration to Poland
[1]The region was dissolved after the Red Army overran East Prussia, and its territory was restored to Poland.
- 1939
Creation of Regierungsbezirk Zichenau
[1]Nazi Germany established the administrative region on 26 October 1939 from Polish territory annexed during the Second World War and placed it within the Province of East Prussia.
- 1939
Ciechanów designated as the administrative capital
[1]The Polish city of Ciechanów was given the German name Zichenau and became the seat of the regional administration.
- 1939
Occupation administration begins
[1]German authorities imposed a system of political repression, population exploitation, cultural suppression and forced labor recruitment across the newly annexed region.
Products and positioning
Historical Nazi German administrative unit in occupied Poland; not a commercial brand or product organization.
Controversies
1939
Nazi occupation crimes and persecution
The region was the site of mass arrests, executions, deportations, forced labor, expulsions, imprisonment and other crimes against Polish and Jewish inhabitants. Repressive campaigns included the Intelligenzaktion and actions associated with Aktion T4.
Brand decisions
1939
Annexation into East PrussiaStrategyBackground
Following Germany's invasion and occupation of Poland, Nazi authorities reorganized the seized territory to remove Polish state authority and integrate it into the German administrative system.
Action taken
The territory was constituted as Regierungsbezirk Zichenau and attached to the Province of East Prussia.
Aftermath
German rule brought systematic repression, economic exploitation, forced labor and cultural destruction before the region was returned to Poland in 1945.
Sources1 sources
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