On 11 September 1944, 24 medium-sized B-26 bombers of the American 17th Bombardment Group hit the hamlet of Baragazza, because the Allied intelligence service had received news that it was to host the German Field Marshal Albert Kesselring, supreme commander of the German army in Italy.
Kesselring actually visited the hamlet that day, home to the command headquarters of the 334th German Infantry Division, but the field marshal arrived early, leaving the hamlet just before the aeroplanes arrived. However, the bombing resulted in the death of 34 civilians and 11 German soldiers.
In 2005, the square was named '11 settembre 1944', in memory of the victims of the bombing.