This article needs additional citations for . verification (July 2008)
Gau East Prussia was formed in 1933 in Nazi Germany initially as a district within the Free State of Prussia. In 1935, Germany's constituent states were dissolved and the gaus replaced the states and their responsibilities.
In 1939, East Prussia expanded following the annexation of the
Klaipėda Region from Lithuania and the occupation of Poland, while a sliver of territory from the gau was transferred to Reichsgau Danzig-West Prussia.
Kreise of Gau East Prussia
After Germany's attack on the USSR, the Belarusian city of
Hrodna ( German: ) also became part of the gau. Garten
After the war, the territory of the former gau became part of the
RSFSR enclave of Kaliningrad in the Soviet Union, major sections were given to Poland, and the area of the Klaipėda Region was returned to the Lithuanian SSR and Hrodna - to the Belarusian SSR within the Soviet Union.