Polish Post Office in Danzig

The Polish Post Office (Poczta Polska) in the Free City of Danzig (Gdańsk) was created in 1920 and operated until the German invasion of Poland that marked the beginning of the World War II.

The post was established in Danzig (Gdańsk) under the provisions of the Treaty of Versailles, and its buildings were considered extraterritorial Polish property.

The Polish Post Office in Danzig comprised several buildings, originally built as a German military hospital. In 1930 the "Gdańsk 1" building on Hevelius Platz (square) in the Danziger Altstadt (Old Town) became the primary Polish post office, with a direct telephone line to Poland. In 1939 it employed slightly over 100 people. Some employees at the Polish Post Office belonged to a self-defence and security organization, and many were also members of the Polish Związek Strzelecki (Riflemen's Association). According to the testimony of Edmund Charaszkiewicz, the Polish Post Office was from 1935 an important component of the Polish Intelligence organization, "Group Zygmunt".

As tensions between Poland and Germany grew, in April 1939 the Polish High Command detached combat engineer and Army Reserve Sublieutenant (or 2LT) Konrad Guderski to the Baltic Sea coast. With Alfons Flisykowski and others, he helped organize the official and volunteer security staff at the Polish Post Office in Danzig, and prepare them for eventual hostilities. In addition to training the staff, he prepared the defenses in and around the building: nearby trees were removed and the entrance was fortified. In mid-August, ten additional employees were sent to the post office from Polish Post offices in Gdynia and Bydgoszcz (mostly reserve non-commissioned officers).

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