On April 11, 1943, the first news about the crime committed in the forest near Katyn was released to the world.

On May 12, 1970, General Władysław Anders, Commander-in-Chief of the Polish Armed Forces in 1944-1945, died in exile in London.

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.

Father Jan Cieplak was auxiliary bishop of the Mogilev archdiocese, at that time the largest Roman Catholic archdiocese in the world, covering the whole of Russia up to Sakhalin.

On the night of 6 to 7 July (24/25 June old style) 1866, 5,000 kilometres east of their homeland, a group of January insurgents sent to Baikal for penal labour stirred up a rebellion, disarmed their guards and tried to forge an escape route to Mongolia.