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.
“Poles! The hour of vengeance has come. Today die or prevail! Let us go, and let your breasts be Thermopylae for your enemies!”