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✦ History

Osowiec Fortress

Fortress

Russian fortress on the Biebrza River in northeastern Poland, besieged by the Germans in 1915.

View on map 53.47° N, 22.64° E Wikipedia

Held by

1789 – October 23, 1795 Polish–Lithuanian Commonwealth de facto
October 24, 1795 – July 9, 1807 Kingdom of Prussia de facto
June 9, 1807 – September 14, 1917 Russian Empire de facto
June 24, 1812 – December 9, 1812 France de facto Military occupation
August 5, 1915 – February 17, 1918 German Empire de facto Military occupation
December 6, 1917 – January 24, 1918 Russia de facto
November 11, 1918 – October 5, 1939 Poland de facto
October 6, 1939 – July 31, 1945 Soviet Union de facto
August 1, 1941 – May 8, 1945 Germany de facto
since August 1, 1945 Poland de facto

Events here 1

August 6, 1915 Attack of the Dead Men