On April 11, 1943, the first news about the crime committed in the forest near Katyn was released to the world.
On May 18, 1944, soldiers of the 2 Polish Corps hung the Polish flag on the ruins of the Monte Cassino monastery.
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.
