On April 11, 1943, the first news about the crime committed in the forest near Katyn was released to the world.
On 4 July 1943, at 23:07, moments after take-off from Gibraltar Airport, Liberator II aircraft AL523 with General Władysław Sikorski on board, crashed into the Mediterranean Sea.
The date of 11 November 1918, being the day on which Poland regained its independence, is a symbolic date. Exactly on that day, an armistice ending the First World War was concluded in a wagon in the forest of Compiègne.
On 4 July 1928, the founding congress of the Sybiraks' Association was held at the Warsaw University of Technology.
The first Siberian fortresses were built by Polish prisoners of war who had been taken captive by Moscow authorities precisely during the war initiated by Stefan Batory.
